Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
nhung cong » dung cong, thong cong, hang cong
tuong cua » truong cua, huong cua, thong cua
cua nhung » va nhung
cong tac » cong ty
toan cao » toan ban
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (toc thieu)) xanh - thanh tuong cua nhung cong tac ((toan cao) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hien) or (toc thieu)) xanh - thanh tuong cua nhung cong tac ((toan cao) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (toc thieu)) xanh - thanh tuong cua nhung cong tac ((toan cao) OR (toan tap))*.