Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
sang ma » tang ma, nang ma, sang tao
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di cua

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

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