Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh mang » nhanh mang, hanh trang, nhanh lang
cua nhung » va nhung
mang cua » manh cua, dung cua, ban cua
cong tac » cong ty
phan tap » phan lap, pha tap, phan tu
ho hieu » ho chieu, hoi hieu, nho hieu
han tap » han tai, toan tap, nhan tai

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 mang cua nhung cong tac ((han tap) or (phan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh mang cua nhung cong tac ((han tap) OR (phan tap)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh mang cua nhung cong tac ((han tap) or (phan tap))*.