Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
thuc va » thuc vat, thuc day
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
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: su sach y nang x ho. hieu ve cham ((thuc va) or (thuc dan)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang x ho. hieu ve cham ((thuc va) OR (thuc dan)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach y nang x ho. hieu ve cham ((thuc va) or (thuc dan)) hanh vi cua tre*.