Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
canh trinh » canh tranh, hanh trinh, canh tinh
theo yeu » theo tieu, thiet yeu, theo chu
chao chu » cho chu, cua chu, cao cho
trinh va » trinh van, trinh vat, trinh ve
va duong » van duong, va tuong, va huong
cong tac » cong ty
qua ban » qua quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo yeu) or (chao chu)) xanh - canh trinh va duong cong tac ((qua ban) OR (cua ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo yeu) OR (chao chu)) xanh - canh trinh va duong cong tac ((qua ban) OR (cua ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo yeu) or (chao chu)) xanh - canh trinh va duong cong tac ((qua ban) OR (cua ban))".
• Adding a wildcard symbol may retrieve word variants: ((theo yeu) or (chao chu)) xanh - canh trinh va duong cong tac ((qua ban) OR (cua ban))*.