Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tranh van » tran van, trinh van, thanh van
nhung van » phung van, nhung bai, nhung cau
bang cong » dang cong, bang song, hang cong
toan cau » toan cao, toan tap, toan tai
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 - canh tranh van ((nhung van) or (bang cong)) manh ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh tranh van ((nhung van) OR (bang cong)) manh ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tranh van ((nhung van) or (bang cong)) manh ((toan cau) or (toan ban))*.