Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
tranh va » tranh van, trang va, trinh va
van phan » van phong, van thanh, luan phan
phap » pham

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 (chieu sach)) - hanh tranh va nhung cong ((ban phap) or (van phan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chieu sach)) - hanh tranh va nhung cong ((ban phap) OR (van phan)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (chieu sach)) - hanh tranh va nhung cong ((ban phap) or (van phan)) tu".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (chieu sach)) - hanh tranh va nhung cong ((ban phap) or (van phan)) tu*.