Perhaps you should try some spelling variations:
hoc thieu » hoc hien
hanh dung » thanh dung, anh dung, hanh dong
dung phan » dung nhan, dung luan, dung ha
phan cong » thanh cong
cong cong » cong dong, trong cong, dung cong
cong toan » cong tan, cong hoan, cong tuan
toan ban » van ban
ban tap » bai tap, han tap, ban tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) OR (toc thieu)) tach - hanh dung phan cong cong toan ban tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (toc thieu)) tach - hanh dung phan cong cong toan ban tap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (toc thieu)) tach - hanh dung phan cong cong toan ban tap*.