Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
dung cong » dung trong
thanh lap » thanh san, phan lap, thanh hai
doc hieu » toc thieu, hoc thieu, hoc hien
cao dung » cao dang, cao dong, cao ung
cong tan » cong tac, cong san, cong thanh
phan cac » nhan cach, phan dau, phan lap

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) OR (thanh cong)) cao dung cong tan ((phan cac) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((thanh tung) OR (thanh cong)) cao dung cong tan ((phan cac) OR (thanh lap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((thanh tung) OR (thanh cong)) cao dung cong tan ((phan cac) or (thanh lap))*".