Perhaps you should try some spelling variations:
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
canh tran » canh tranh, hanh trang, banh trang
cong cong » cong dong, trong cong, dung cong
tran van » luan van
van cong » van dong, van phong, phan cong
cong tac » cong ty
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

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