Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
doanh cua » doanh luan
dung cong » dung trong
manh cua » ban cua
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: theo ((chieu sang) or (dieu hanh)) - hanh ((manh cua) OR (doanh cua)) dung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (dieu hanh)) - hanh ((manh cua) OR (doanh cua)) dung cong tan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) or (dieu hanh)) - hanh ((manh cua) OR (doanh cua)) dung cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (dieu hanh)) - hanh ((manh cua) OR (doanh cua)) dung cong tan toan cau*.