Perhaps you should try some spelling variations:
trinh thuat » trinh luat, trinh thiet, trinh chat
trinh thuc » trinh tu, trinh thi
dung cong » dung trong
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
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)) dung cong van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiu trach - hanh ((trinh thuat) OR (trinh thuc)) dung cong van toan tap.
• Adding a wildcard symbol may retrieve word variants: ho chiu trach - hanh ((trinh thuat) or (trinh thuc)) dung cong van toan tap*.