Perhaps you should try some spelling variations:
trung may » trung ma, trung tam, trung cap
thien van » thi van
trung gay » trong gay, trung tam, trung cap
hieu van » hieu va, lieu va, hieu ve
tinh va » tich va, trinh van, trinh vat
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
va cua » va chua, via cua, ca 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 xa hoi. ((hieu van) or (thien van)) lam ((trung may) or (trung gay)) tinh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. ((hieu van) OR (thien van)) lam ((trung may) OR (trung gay)) tinh va cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. ((hieu van) or (thien van)) lam ((trung may) or (trung gay)) tinh va cua tre*.