Perhaps you should try some spelling variations:
cong nguong » cong nguon, cong thuong, cong luong
nhanh thong » nhanh chong, nhanh thang, nhanh hong
theo chieu » theo tieu, ho chieu, thi chieu
nhan thong » nhan trong, nha thong, nhan khong
nguong dan » huong dan
theo chu » cho chu, chao chu, theo yeu
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
tu cong » thu cong, te cong, tai cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (theo chu)) xanh - ((nhanh thong) OR (nhan thong)) tu cong nguong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) xanh - ((nhanh thong) OR (nhan thong)) tu cong nguong dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo chu)) xanh - ((nhanh thong) OR (nhan thong)) tu cong nguong dan than cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo chu)) xanh - ((nhanh thong) OR (nhan thong)) tu cong nguong dan than cau*.