Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
sach ly » sach y, sach lo, sach ty
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ly ((nang xa) or (lang xa)) hoi. hieu ve cam ((luc va) OR (tuc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ly ((nang xa) OR (lang xa)) hoi. hieu ve cam ((luc va) OR (tuc va)) hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ly ((nang xa) or (lang xa)) hoi. hieu ve cam ((luc va) OR (tuc va)) hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ly ((nang xa) or (lang xa)) hoi. hieu ve cam ((luc va) OR (tuc va)) hanh vi cua tre*.