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