Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
tan phuong » tran phuong, tai phuong, van phuong
ngang hang » ngan hang, hang hang, ngan han
hieu lang » chieu sang, hieu quang, nhieu tang
nang hang » nang sang, hang hang, cang thang
doc hieu » toc thieu, hoc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu lang - thanh cong tan phuong cong ((ngang hang) or (nang hang)) dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu lang - thanh cong tan phuong cong ((ngang hang) OR (nang hang)) dau.
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - thanh cong tan phuong cong ((ngang hang) or (nang hang)) dau*.