Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, hieu van
canh manh » lanh manh, canh tranh, cach mang
cua thong » cua thuong, cua khong, cua tong
manh cua » doanh cua, ban cua
cong san » cong tac
pham dau » phan dau, pham dat, phap dau
pham dac » pham duc, pham dang, pham sach

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhieu tang)) - canh manh cua thong cong san ((pham dau) OR (pham dac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (nhieu tang)) - canh manh cua thong cong san ((pham dau) OR (pham dac))~".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (nhieu tang)) - canh manh cua thong cong san ((pham dau) OR (pham dac))*.