Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, chau tinh, kieu tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban
luan » quan, lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu tinh) or (lieu tinh)) - hanh ((tran van) or (luan van)) dung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (lieu tinh)) - hanh ((tran van) OR (luan van)) dung cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (lieu tinh)) - hanh ((tran van) or (luan van)) dung cong tan toan ban*.