Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
su sach » so sach, vu sach
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
hieu ve » hieu va, hieu van
hanh di » hanh vi, hanh de, hang di
di cua » dai cua, doi cua, de cua
tuc va » thuc va, truc va, duc va
ha hoi » hoa hoi, ha noi, xa hoi
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu bach) or (su sach)) ky lang ha hoi. hieu ve cac ((tuc va) or (tuc xa)) hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu bach) OR (su sach)) ky lang ha hoi. hieu ve cac ((tuc va) OR (tuc xa)) hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu bach) or (su sach)) ky lang ha hoi. hieu ve cac ((tuc va) or (tuc xa)) hanh di cua tre*.