Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo chieu » theo tieu, ho chieu
thi chieu » thi chien, thi hieu, thi hien
ganh nang » anh nang, nganh nong, van nang
theo chu » cho chu, chao chu, theo yeu
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap
nang va » nang van, hang va, nang ma

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 (thi chieu))) or (theo chu)) xanh - ganh nang va nhung cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((theo chieu) OR (thi chieu))) OR (theo chu)) xanh - ganh nang va nhung cong san toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((theo chieu) OR (thi chieu))) or (theo chu)) xanh - ganh nang va nhung cong san toan cau*".