Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh toan » thanh hoa, thanh san, tinh toan
dung cong » dung trong
tang vat » tang van, dang vat, cang vat
bang vat » bang va, dang vat, cang vat
toan tap » toan ban

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 (chieu tinh)) - hanh ((tang vat) OR (bang vat)) dung cong thanh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((dieu hanh) OR (chieu tinh)) - hanh ((tang vat) OR (bang vat)) dung cong thanh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((dieu hanh) or (chieu tinh)) - hanh ((tang vat) OR (bang vat)) dung cong thanh toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((dieu hanh) or (chieu tinh)) - hanh ((tang vat) OR (bang vat)) dung cong thanh toan tap*.