Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hanh trang » thanh trung, canh tranh, hanh trinh
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
van dung » van dong, tin dung
toan cau » 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: toc ((chieu sang) OR (chieu sach)) - hanh trang ((van dung) or (xay dung)) cong thanh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((chieu sang) OR (chieu sach)) - hanh trang ((van dung) OR (xay dung)) cong thanh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((chieu sang) OR (chieu sach)) - hanh trang ((van dung) or (xay dung)) cong thanh toan cau".
• Adding a wildcard symbol may retrieve word variants: toc ((chieu sang) OR (chieu sach)) - hanh trang ((van dung) or (xay dung)) cong thanh toan cau*.