Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
hoc sach » hoc sinh, hoc cac, hoc anh
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, xuc ban
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
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: ((thuoc sach) OR (hoc sach)) ty ((sang ma) or (van xay)) hoi. hieu ve cam xuc van anh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) ty ((sang ma) OR (van xay)) hoi. hieu ve cam xuc van anh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (hoc sach)) ty ((sang ma) or (van xay)) hoi. hieu ve cam xuc van anh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) OR (hoc sach)) ty ((sang ma) or (van xay)) hoi. hieu ve cam xuc van anh vi cua tre*.