Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
canh trinh » canh tranh, hanh trinh, canh tinh
hang cong » dang cong, hang nong, bang cong
trinh va » trinh van, trinh vat, trinh ve
tac phat » tac pham, tan phat, tao phat
tam phat » va phat, dao phat, tam than
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sang) or (chieu sach)) - canh trinh va hang cong ((tac phat) OR (tam phat)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu sach)) - canh trinh va hang cong ((tac phat) OR (tam phat)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) or (chieu sach)) - canh trinh va hang cong ((tac phat) OR (tam phat)) cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (chieu sach)) - canh trinh va hang cong ((tac phat) OR (tam phat)) cau*.