Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
cua nhung » va nhung
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: ((theo tieu) or (cho chu)) xanh - ((hanh tang) or (hanh mang)) cua nhung cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (cho chu)) xanh - ((hanh tang) OR (hanh mang)) cua nhung cong tap toan cau.
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (cho chu)) xanh - ((hanh tang) or (hanh mang)) cua nhung cong tap toan cau*.