Perhaps you should try some spelling variations:
thuat nhung » thuat hung, thuat chung, thuat chuong
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hien tinh » khien tinh, thien tinh, bien tinh
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
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: hoc hien tinh - ((thanh trung) or (thanh tung)) thuat nhung cong hach toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - ((thanh trung) OR (thanh tung)) thuat nhung cong hach toan ban*.