Perhaps you should try some spelling variations:
thuc van » thuc dan, thuc va, thuc hanh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
ve dat » de dat, va dat, ve dao
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: su sach ty nang xa hoi. hieu ve dat ((thuc van) or (thuc vat)) hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu ve dat ((thuc van) OR (thuc vat)) hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ve dat ((thuc van) or (thuc vat)) hanh di cua tre*.