Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hung thang » cang thang, hung tran
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
nang hang » nang sang, hang hang, cang thang
ca nhung » cua nhung, cam nhung, va nhung
van toan » van tuan, van thanh, manh toan
van tan » van tuan, van ban, van tai

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 - ((nang hang) or (hung thang)) ca nhung cong ((van toan) OR (van tan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((nang hang) OR (hung thang)) ca nhung cong ((van toan) OR (van tan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((nang hang) or (hung thang)) ca nhung cong ((van toan) OR (van tan)) tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((nang hang) or (hung thang)) ca nhung cong ((van toan) OR (van tan)) tap*.