Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
hoc sach » hoc sinh, hoc cac, hoc anh
cua tre » cuu tre, cua triet, dua tren
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
cham lo » cham o, cam lo, cham soc
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
nang co » nang cao, nang doc, nang noi
co hoi » co hoc, co loi
v nang » va nang, vu nang, van nang
cua te » cua tu
lo va » lo van, lao va, ly va

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)) v nang co hoi. hieu vu cham lo va hanh va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) v nang co hoi. hieu vu cham lo va hanh va ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (hoc sach)) v nang co hoi. hieu vu cham lo va hanh va ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) OR (hoc sach)) v nang co hoi. hieu vu cham lo va hanh va ((cua tre) or (cua te))*.