Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
manh toan » thanh toan, anh tuan, tinh toan
nha hieu » nha dieu, nghe hieu, phan hieu
trinh va » trinh van, trinh vat, trinh ve
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: nha hieu lang - hanh trinh va nhung cong ((manh toan) or (dan than)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nha hieu lang - hanh trinh va nhung cong ((manh toan) OR (dan than)) tap.
• Adding a wildcard symbol may retrieve word variants: nha hieu lang - hanh trinh va nhung cong ((manh toan) or (dan than)) tap*.