Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
thong cong » trong cong, tong cong, thong thong
canh tinh » hanh tinh, manh tinh, canh tranh
ve thong » he thong, va thong, ve phong
cong van » cong vang, cong san, song van
phan cau » phan dau, phan cac, phan lap
tinh ve » trinh ve, tinh ven, dinh ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (chieu sach)) - canh tinh ve thong cong van ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - canh tinh ve thong cong van ((phan cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - canh tinh ve thong cong van ((phan cau) or (phan tu))*.