Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
van thanh » ban thanh
ho nhung » cho nhung, hoa nhung, hoc nhung
van toan » van tan, manh toan, xuan toan
van tuan » van quan, van ban, anh tuan
tung ho » tuong ho, trung hoc, trung hoa

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