Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
hanh mang » nhanh mang, hanh trang, nhanh lang
mang tuan » manh tuan, quang tuan, hoang tuan
bang cong » bang song, hang cong, dung cong
dang cong » dung cong
san van » tan van, luan van, tran van

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 mang tuan ((bang cong) or (dang cong)) san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh mang tuan ((bang cong) OR (dang cong)) san van ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh mang tuan ((bang cong) or (dang cong)) san van ban*.