Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
hanh san » thanh san, khach san, thanh son
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than
san cua » sang cua, ban cua, dan cua
chuc » thuc, chu, chua

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 (chuc nang)) - hanh san cua thong cong ((dan toan) OR (dan than)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chuc nang)) - hanh san cua thong cong ((dan toan) OR (dan than)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) or (chuc nang)) - hanh san cua thong cong ((dan toan) OR (dan than)) tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chuc nang)) - hanh san cua thong cong ((dan toan) OR (dan than)) tap*.