Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
cong thanh » dong thanh, cong trinh, cong tan
tieu xanh » tieu danh, chieu xanh, dieu hanh
gian dang » gian lang, gian dong, gian quang
hang cong » dang cong, hang nong, bang cong
gian dan » gian lang
toan cao » toan ban, toan tap
va hang » van hang, va nang, va lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - ((gian dang) or (gian dan)) va hang cong thanh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((gian dang) OR (gian dan)) va hang cong thanh toan cao*.