Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
toc hieu » toc thieu, doc hieu, hoc thieu
thang he » tang he, thang nghe, thang nho
cong van » cong vang, cong san, song van
phan van » pham van, thanh van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu lang - nhanh thang he thong cong van ((phan tu) or (phan van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu lang - nhanh thang he thong cong van ((phan tu) OR (phan van))*.