Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
cong thanh » dong thanh, cong trinh, truong thanh
hoc thieu » toc thieu, hoc hien
cap hoang » cam hoang, cau hoang, van hoang
may nong » may cong, may nang, mo nong
cong tan » cong tac, cong san, cong ty
khan cap » khan ap, than cap, khoan cam

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 - thanh tung ((may nong) or (cap hoang)) ((cong tan) OR (cong thanh)) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh tung ((may nong) OR (cap hoang)) ((cong tan) OR (cong thanh)) khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh tung ((may nong) or (cap hoang)) ((cong tan) OR (cong thanh)) khan cap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh tung ((may nong) or (cap hoang)) ((cong tan) OR (cong thanh)) khan cap*.