Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
duoc va » nuoc va, duc va, duoc ma
luoc va » nuoc va, loc va, luc va
va cham » va chat, va tham
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cua tre » cua te, cuu tre, cua triet
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: vu sach y ((nang xa) or (nang ma)) hoi. lieu va cham ((luoc va) OR (duoc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang xa) OR (nang ma)) hoi. lieu va cham ((luoc va) OR (duoc va)) hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y ((nang xa) or (nang ma)) hoi. lieu va cham ((luoc va) OR (duoc va)) hanh vi cua tre*".