Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo chieu » theo tieu, ho chieu, theo chu
doi chieu » doc hieu, ho chieu, mot chieu
tranh cua » doanh cua, manh cua
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
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((doi chieu) or (theo chieu))) or (doi chi)) xanh - canh tranh cua nhung cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((doi chieu) OR (theo chieu))) OR (doi chi)) xanh - canh tranh cua nhung cong tap toan cau.
• Adding a wildcard symbol may retrieve word variants: ((((doi chieu) or (theo chieu))) or (doi chi)) xanh - canh tranh cua nhung cong tap toan cau*.