Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
trang va » tran van, hang va
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban
tang va » tang van, thang va, tang vat

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chu) or (hoc thieu)) sach - anh ((tang va) or (trang va)) dung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (hoc thieu)) sach - anh ((tang va) OR (trang va)) dung cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (hoc thieu)) sach - anh ((tang va) or (trang va)) dung cong tac toan ban*.