Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chung cong » nhung cong, chong cong, phung cong
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
anh dung » anh dong, anh huong, sach dung
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - anh dung luan ((chung cong) or (dung cong)) tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - anh dung luan ((chung cong) OR (dung cong)) tac than cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - anh dung luan ((chung cong) or (dung cong)) tac than cau*.