Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trang » thanh trung, canh tranh, hanh trinh
hieu lang » chieu sang, hieu quang, nhieu tang
trang cua » tranh cua, tang cua, trung cua
cua nhung » va nhung
cong tac » cong ty
than tap » toan tap, han tap, than cap
phan tap » phan lap, han tap, pha tap
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh trang cua nhung cong tac ((than tap) or (phan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh trang cua nhung cong tac ((than tap) OR (phan tap)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh trang cua nhung cong tac ((than tap) or (phan tap))*.