Perhaps you should try some spelling variations:
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
vap nhung » va nhung, ve nhung, voi nhung
theo chu » theo chieu, cho chu, chao chu
chu tinh » chau tinh, chua tinh, cuu tinh
cong tan » cong tac, cong san, cong thanh
khoa tap » khoa tai, khoa than, hoc tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu tinh - ((thanh trung) OR (thanh tung)) vap nhung cong tan ((khoa tap) OR (hoa dan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu tinh - ((thanh trung) OR (thanh tung)) vap nhung cong tan ((khoa tap) or (hoa dan))~".
• Adding a wildcard symbol may retrieve word variants: theo chu tinh - ((thanh trung) OR (thanh tung)) vap nhung cong tan ((khoa tap) or (hoa dan))*.