Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, ho chieu, mot chieu
nhung cau » chung cu, nhung bai, nhu cau
tranh va » tranh van, trang va, trinh va
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
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 (doi chi)) xanh - canh tranh va ((nhung cau) or (thong cong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) xanh - canh tranh va ((nhung cau) OR (thong cong)) dan than cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doi chi)) xanh - canh tranh va ((nhung cau) or (thong cong)) dan than cau*.