Perhaps you should try some spelling variations:
xuong cong » luong cong, duong cong, cuong cong
hoc thieu » hoc hien
hanh dung » thanh dung, anh dung, hanh dong
ha xuong » phan xuong, khac xuong, gay xuong
cong tan » cong tac, cong san, cong thanh
dung ha » dung va, dung he, dung khoa
tan ban » toan ban, tang 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: ((toc thieu) or (hoc thieu)) tach - hanh dung ha xuong cong tan ban tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc thieu) OR (hoc thieu)) tach - hanh dung ha xuong cong tan ban tap.
• Adding a wildcard symbol may retrieve word variants: ((toc thieu) or (hoc thieu)) tach - hanh dung ha xuong cong tan ban tap*.