Perhaps you should try some spelling variations:
trung gay » trong gay, trung tam, trung cap
nam trung » nam trong, tai trung, ba trung
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
gay tinh » may tinh, tay tinh, giao tinh
tinh vi » trinh vi, tinh voi, tinh va
su sach » vu sach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty nang xa hoi. ((hieu van) OR (thien van)) nam trung gay tinh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ty nang xa hoi. ((hieu van) or (thien van)) nam trung gay tinh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ty nang xa hoi. ((hieu van) or (thien van)) nam trung gay tinh vi cua tre*.