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
tong huong » thong huong, tong thuong, cong huong
tranh cua » doanh cua, manh cua
cua tong » cua cong, cua dong, cua nong
dan phan » doan phan, dan chan, van phan

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 cua tong huong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chieu sach)) - hanh tranh cua tong huong dan phan tu.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chieu sach)) - hanh tranh cua tong huong dan phan tu*.