Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
sach tao » sach dao, sach bao, sach tai
tao nang » cao nang, tao bang, tai nang
nang cau » nang cao, hang cau, nang dau
cua tre » cua te, cuu tre, cua triet
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, vuc van
co sach » bo sach, cuon sach, hoc sach
hieu va » hieu qua
anh va » hanh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach tao nang cau hoi. ((hieu va) OR (lieu va)) cam xuc van anh va ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach tao nang cau hoi. ((hieu va) OR (lieu va)) cam xuc van anh va ((cua tre) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach tao nang cau hoi. ((hieu va) OR (lieu va)) cam xuc van anh va ((cua tre) or (cau treo))".
• Adding a wildcard symbol may retrieve word variants: co sach tao nang cau hoi. ((hieu va) OR (lieu va)) cam xuc van anh va ((cua tre) or (cau treo))*.