Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh tranh » canh tranh, hanh trinh, hanh trang
tong thong » thong thong, cong thong, thong thuong
dong thong » thong thong, nong thon, dong thanh
tranh cua » doanh cua, manh cua
dan nhanh » dan hanh, dan khanh, dan thanh
nhanh bac » nhanh ha, nhanh va

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 sach) or (chieu sang)) - hanh tranh cua ((tong thong) OR (dong thong)) dan nhanh bac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu sang)) - hanh tranh cua ((tong thong) OR (dong thong)) dan nhanh bac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) or (chieu sang)) - hanh tranh cua ((tong thong) OR (dong thong)) dan nhanh bac".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu sang)) - hanh tranh cua ((tong thong) OR (dong thong)) dan nhanh bac*.