Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
truc va » thuc va, thuc vat, trung va
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
ky dang » ky nang, ky danh
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky dang xa hoi. hieu va cam ((luc va) or (((tuc xa) or (truc va)))) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky dang xa hoi. hieu va cam ((luc va) OR (((tuc xa) OR (truc va)))) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach ky dang xa hoi. hieu va cam ((luc va) or (((tuc xa) or (truc va)))) hanh vi cua tre*.