Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
duong cong » dung cong, luong cong, duong trong
hoc thieu » toc thieu, hoc hien
tran tuan » tran quang, tran thanh, tranh luan
tran xuan » tran quang, tran van
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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 tinh - thanh ((tran tuan) or (tran xuan)) duong cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - thanh ((tran tuan) OR (tran xuan)) duong cong tac toan ban*.