Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
quang dung » quang trung, cuong dung
chu manh » ho manh, chu han, chu van
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cau » toan cao, toan ban, toan tap
cho chu » cho thue

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

• Performing a fuzzy search may retrieve terms with similar spellings: cho chu manh - hanh trinh ((quang dung) or (ung dung)) cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho chu manh - hanh trinh ((quang dung) OR (ung dung)) cong tap toan cau.
• Adding a wildcard symbol may retrieve word variants: cho chu manh - hanh trinh ((quang dung) or (ung dung)) cong tap toan cau*.