Perhaps you should try some spelling variations:
thanh tung » thanh cong
tiep danh » tieu danh, thien danh, tiep can
cap nhung » cam nhung, dap nhung, canh nhung
vap nhung » va nhung, ve nhung, voi nhung
cong san » cong tac
san tran » tan tran, ban tran, dang tran
tran tap » toan tap, tran tan, tran tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((dieu hanh) or (tiep danh)) - thanh tung ((cap nhung) OR (vap nhung)) cong san tran tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((dieu hanh) OR (tiep danh)) - thanh tung ((cap nhung) OR (vap nhung)) cong san tran tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((dieu hanh) or (tiep danh)) - thanh tung ((cap nhung) OR (vap nhung)) cong san tran tap".
• Adding a wildcard symbol may retrieve word variants: theo ((dieu hanh) or (tiep danh)) - thanh tung ((cap nhung) OR (vap nhung)) cong san tran tap*.