Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
anh trong » anh thuong, dinh trong, lang trong
dung cong » dung trong
cac dung » cach dung, cac duong, tac dung
cong tan » cong tac, cong san, cong thanh
tran tap » toan tap, tran tuan, trang tai
tran tan » tran tuan, tran van, tran thanh

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