Perhaps you should try some spelling variations:
trinh thuat » trinh luat, trinh thiet, trinh chat
trinh thuc » trinh tu
trinh thi » trinh tai, dinh thi, trinh tu
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban
ho chiu » ho chieu, hoi chiu, ho chi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiu trach - hanh ((trinh thuat) or (((trinh thuc) OR (trinh thi)))) dung cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiu trach - hanh ((trinh thuat) OR (((trinh thuc) OR (trinh thi)))) dung cong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiu trach - hanh ((trinh thuat) or (((trinh thuc) OR (trinh thi)))) dung cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chiu trach - hanh ((trinh thuat) or (((trinh thuc) OR (trinh thi)))) dung cong dan toan tap*.