Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
mang vua » mang cua, hang va, bang va
cong bai » cuong bai, cong hai, cung bai
ho hieu » ho chieu, hoi hieu, nho hieu
mang va » hang va, bang va, dang va
tap tap » tap tai, lap tap, tap lap

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 - hanh ((mang va) or (mang vua)) nhung cong bai tap tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh ((mang va) OR (mang vua)) nhung cong bai tap tap*.