Perhaps you should try some spelling variations:
nhanh lang » nhanh quang, nhanh thang, nhan dang
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
ho hieu » ho chieu, hoi hieu, nho 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: ho hieu lang - nhanh lang va thong cong dan van ban~.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - nhanh lang va thong cong dan van ban*.