Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
nhanh lang » nhanh quang, nhanh thang, nhan dang
va phuong » va thuong, cac phuong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
co hieu » cao hieu, doc hieu
lang va » lang van, hang va, lang ha
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((co hieu) or (ho chieu)) lang - nhanh lang va phuong cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((co hieu) OR (ho chieu)) lang - nhanh lang va phuong cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: ((co hieu) or (ho chieu)) lang - nhanh lang va phuong cong dan van ban*.