Why does this following query :

SELECT `position`.`title`
FROM `position`
WHERE 1
AND MATCH (`position`.`title`)
AGAINST ('"sales manager" +software' IN BOOLEAN MODE)
LIMIT 0 , 30

Result in these results below, when surely it should only match any titles with the phrase "sales manager" AND software ?

title
? Linux Embedded Software Engineer
? Senior Software Engineer X 4
? Software Development Manager
? C# Software Engineer (C#, .Net)
? C#/VB.NET Software Engineer - Cambridge
? Senior Software Engineer, Dot Net Development
? Embedded Software Engineer
? Sales Consultant/Video Editing Software
? IT Sales - Accounting Software
? IT Sales - Project Collaboration Software
? IT Sales - Project Collaboration Software
? Software Engineer - Bluetooth
? BDM/Sales Executive - HR & Payroll Software
? Bluetooth Software Engineer
? Embedded Software Engineer
? .NET Software Developer
? Embedded Software Engineer
? Bluetooth Embedded Software Engineer
? BDM/Senior Sales - ERP Software
? BDM - ERP Software
? New Business Sales IT Hardware And Software
? Senior Sales - Retail Software
? Senior Sales Business Intelligence Software
? Senior New Business - IT/Software Solutions
? BDM/Senior Sales - Case Management Software
? Sales/Account Manager Software/ERP
? EMEA Account Director Big Ticket Software
? Sales Manager/BDM BPM Software
? Sales Manager - Software Solutions
? IT Sales-ERP / Financial Software

thanks

if you want AND behaviour, then you must use + on both terms

... AGAINST (' +"sales manager" +software ' IN BOOLEAN MODE)