Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
toc chieu » doc hieu, hoc thieu, doi chieu
hanh tram » hanh tam, hanh trang, thanh tran
cong san » cong tac
toan tap » toan ban
toan cao » toan ban
tram va » tran van, trang va, tram cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc chieu) or (toc thieu)) xanh - hanh tram va nhung cong san ((toan tap) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc chieu) OR (toc thieu)) xanh - hanh tram va nhung cong san ((toan tap) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ((toc chieu) or (toc thieu)) xanh - hanh tram va nhung cong san ((toan tap) or (toan cao))*.