Perhaps you should try some spelling variations:
vang thanh » van thanh, dang thanh, tang thanh
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
bang luan » tang luan, hang luan, tong luan
dang cong » dung cong
cong vang » cong lang, cong quang, cong ngang
thanh cao » thanh ca, thanh cac, thanh thao

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 tinh - hanh ((bang luan) or (dung luan)) dang cong vang thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh ((bang luan) OR (dung luan)) dang cong vang thanh cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh ((bang luan) or (dung luan)) dang cong vang thanh cao*.