Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
dong qua » dong cua, dong mua, song qua
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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 ((dong qua) or (duong qua)) dung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - anh ((dong qua) OR (duong qua)) dung cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - anh ((dong qua) or (duong qua)) dung cong tan toan ban*.