Perhaps you should try some spelling variations:
phuong danh » phuong anh, phuong dinh, phuong hanh
phuong dan » phuong doan, huong dan, phuong lan
hieu lang » chieu sang, hieu quang, nhieu tang
manh hung » anh huong
hoc hieu » hoc thieu, hoc hien, doc hieu
khan cap » khan ap, than cap, khoan cam
hung va » huong va, hung van, hang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - manh hung va nhung ((phuong dan) or (phuong danh)) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - manh hung va nhung ((phuong dan) OR (phuong danh)) khan cap.
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - manh hung va nhung ((phuong dan) or (phuong danh)) khan cap*.