Perhaps you should try some spelling variations:
thanh tung » thanh cong
dang cong » dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
ho chieu » theo chieu, hoc thieu, doi chieu
tung cua » trung cua, tuong cua, dung cua
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (ho chieu)) xanh - thanh tung cua dang cong tan ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (ho chieu)) xanh - thanh tung cua dang cong tan ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (ho chieu)) xanh - thanh tung cua dang cong tan ((toan cau) or (toan tap))*.