Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
hoc sach » hoc sinh, hoc cac, hoc anh
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
v nang » va nang, vu nang, van nang
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu

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 xa hoi. lieu va cam xuc va thanh vi ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) v nang xa hoi. lieu va cam xuc va thanh vi ((cua tre) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (hoc sach)) v nang xa hoi. lieu va cam xuc va thanh vi ((cua tre) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) OR (hoc sach)) v nang xa hoi. lieu va cam xuc va thanh vi ((cua tre) or (cua tu))*.