Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
hang cong » dang cong, hang nong, bang cong
thu hang » thi hang, thuc hanh, thu huong
trang va » tran van, hang va
toan cau » toan cao, toan ban, toan tap
tang va » tang van, thang va, tang vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chuc nang) or (thu hang)) - hanh ((tang va) OR (trang va)) hang cong thanh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc nang) OR (thu hang)) - hanh ((tang va) OR (trang va)) hang cong thanh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc nang) or (thu hang)) - hanh ((tang va) OR (trang va)) hang cong thanh toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc nang) or (thu hang)) - hanh ((tang va) OR (trang va)) hang cong thanh toan cau*.