Perhaps you should try some spelling variations:
tran thanh » ban thanh, van thanh, quan thanh
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, tranh luan
cac dung » cach dung, cac duong, tac dung
cong san » cong tac

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 thanh) 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 thanh) OR (tran tuan)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - anh trong cac dung cong san ((tran thanh) or (tran tuan))*.