Perhaps you should try some spelling variations:
nhanh dung » nhanh dong, hanh dung, nhanh hung
trong hach » trong mach, trong cach, trong hanh
hieu lang » chieu sang, hieu quang, nhieu tang
luan dung » lan dung, luan dong, luan hung
hach toan » thanh toan, manh toan
doc hieu » toc thieu, hoc thieu, hoc hien
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu lang - nhanh dung luan dung trong hach toan ban~.
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - nhanh dung luan dung trong hach toan ban*.