Perhaps you should try some spelling variations:
chieu tinh » lieu tinh, chau tinh, kieu tinh
nhung cong » dung cong, thong cong, hang cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban
san va » san van, ban va, han va
dan va » doan va, dan ca, ban va

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu tinh) or (trieu tinh)) - hanh ((san va) OR (dan va)) nhung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (trieu tinh)) - hanh ((san va) OR (dan va)) nhung cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu tinh) or (trieu tinh)) - hanh ((san va) OR (dan va)) nhung cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) or (trieu tinh)) - hanh ((san va) OR (dan va)) nhung cong tac toan ban*.