Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
truc va » thuc va, thuc vat, trung va
va cham » va chat, va tham
cuu tre » cua tre, cau tren, cau treo
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, tuc xa, duc va
xang o » lang o, tang o, dang o
vi cuu » vi luu, vinh cuu
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty xang o hoi. hieu ((ve cam) or (va cham)) ((tuc va) or (truc va)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang o hoi. hieu ((ve cam) OR (va cham)) ((tuc va) OR (truc va)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang o hoi. hieu ((ve cam) or (va cham)) ((tuc va) or (truc va)) hanh vi cuu tre*.