Perhaps you should try some spelling variations:
tong cong » trong cong, cong cong, dung cong
chi sang » chieu sang, chi chang, khai sang
chi lang » thi lan, chi van, hoi lang
trang va » tran van
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

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