Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu lang » chieu sang, hieu quang, nhieu tang
luat dung » suat dung, luat chung, luat quang
trong tac » trong cac, tuong tac, trong tan
doi hieu » doi chieu, doc hieu, doi hien
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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 - hanh trinh luat dung trong tac toan tap~.
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - hanh trinh luat dung trong tac toan tap*.