Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
doanh qua » doanh quan, doanh cua, doanh quang
dung cong » dung trong
ho chieu » theo chieu, doi chieu, mot chieu
danh qua » hanh qua, doanh quan, manh quan
cong san » cong tac
san tran » tan tran, ban tran, dang tran
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) xanh - canh ((doanh qua) OR (danh qua)) dung cong san tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - canh ((doanh qua) OR (danh qua)) dung cong san tran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) xanh - canh ((doanh qua) OR (danh qua)) dung cong san tran cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - canh ((doanh qua) OR (danh qua)) dung cong san tran cau*.