Perhaps you should try some spelling variations:
cac thuc » cach thuc, cac thu, can thuc
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
ve cac » va cac, vien cac
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh ((y nang) or (v nang)) xa hoi. hieu ve cac thuc va danh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh ((y nang) OR (v nang)) xa hoi. hieu ve cac thuc va danh di cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc sinh ((y nang) or (v nang)) xa hoi. hieu ve cac thuc va danh di cua tre*.