Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
canh manh » lanh manh, canh tranh, cach mang
long tinh » cong tinh, trong tinh, luong tin
doi hieu » doi chieu, doc hieu, doi hien
manh cua » doanh cua, ban cua
cua dang » cua cong, cua ban
tuong tu » thong tu, luong tu, tuong tac

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 - canh manh cua dang ((cong trinh) or (long tinh)) tuong tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - canh manh cua dang ((cong trinh) OR (long tinh)) tuong tu.
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - canh manh cua dang ((cong trinh) or (long tinh)) tuong tu*.