Perhaps you should try some spelling variations:
thanh tung » thanh cong
luong cong » dung cong, trong cong, cong cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
da luong » dai luong, do luong, du luong
cong san » cong tac
toan cau » toan ban, toan tai
toan cao » toan ban
toan tap » toan ban
tung da » tung dan, dung da, tang da

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 xanh - thanh tung da luong cong san ((toan cau) or (((toan cao) OR (toan tap))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh tung da luong cong san ((toan cau) OR (((toan cao) OR (toan tap)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - thanh tung da luong cong san ((toan cau) or (((toan cao) OR (toan tap))))".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh tung da luong cong san ((toan cau) or (((toan cao) OR (toan tap))))*.