Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
bang cong » dang cong, bang song, hang cong
dan toan » van toan, dan than, manh toan
toan ban » van ban
tung va » trung va, tuong va, vung va

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 - thanh ((tung va) or (dung va)) ((nhung cong) or (bang cong)) dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - thanh ((tung va) OR (dung va)) ((nhung cong) OR (bang cong)) dan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - thanh ((tung va) or (dung va)) ((nhung cong) or (bang cong)) dan toan ban*.