Perhaps you should try some spelling variations:
trinh thuat » trinh thiet, trinh chat, trinh thuy
trinh thuc » trinh tu, trinh thi
dung cong » dung trong
hoi chiu » hoi chu, doi chieu, hai chieu
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban
luat » luan, xuat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi chiu trach - hanh ((((trinh thuat) or (trinh luat))) or (trinh thuc)) dung cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi chiu trach - hanh ((((trinh thuat) OR (trinh luat))) OR (trinh thuc)) dung cong dan toan tap.
• Adding a wildcard symbol may retrieve word variants: hoi chiu trach - hanh ((((trinh thuat) or (trinh luat))) or (trinh thuc)) dung cong dan toan tap*.