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
tran tuan » tran xuan, tran quang, tran thanh
cac dung » cach dung, cac duong, tac dung
cong san » cong tac
tran tap » toan tap, tran tan, trang 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 - anh trong cac dung cong san ((tran tap) or (tran tuan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - anh trong cac dung cong san ((tran tap) OR (tran tuan)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - anh trong cac dung cong san ((tran tap) or (tran tuan))*.