Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, qua cua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, su sach, vu khach
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa
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 lang xa hoi. hieu ((ve cam) or (((qua cham) or (va cham)))) tuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y lang xa hoi. hieu ((ve cam) OR (((qua cham) OR (va cham)))) tuc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach y lang xa hoi. hieu ((ve cam) or (((qua cham) or (va cham)))) tuc va hanh vi cua tre*.