Perhaps you should try some spelling variations:
tuong cong » truong cong, trong cong, tong cong
ton tieng » toan tieng, mon tieng, trong tieng
trinh vat » trinh van, trinh luat, sinh vat
trinh va » trinh van, trinh ve, trinh vi
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ton tieng anh - hanh ((trinh va) OR (trinh vat)) tuong cong san toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ton tieng anh - hanh ((trinh va) OR (trinh vat)) tuong cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: ton tieng anh - hanh ((trinh va) OR (trinh vat)) tuong cong san toan cao*.