Perhaps you should try some spelling variations:
nhanh lang » nhanh quang, nhanh thang, nhan dang
phuong dan » phuong danh, phuong doan, phuong lan
hieu lang » chieu sang, hieu quang, nhieu tang
doi hieu » doi chieu, doc hieu, doi hien
anh tang » anh bang, anh dang, anh nang
cua dang » cua cong, cua ban
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - ((anh tang) or (nhanh lang)) cua dang ((phuong dan) or (huong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - ((anh tang) OR (nhanh lang)) cua dang ((phuong dan) OR (huong dan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - ((anh tang) or (nhanh lang)) cua dang ((phuong dan) or (huong dan)) toan cau*.