Perhaps you should try some spelling variations:
thien van » thi van
thanh lap » thanh san, phan lap, thanh hai
hieu van » hieu va, lieu va, hieu ve
su sach » so sach, vu sach
lap cua » lai cua, tap cua, lam cua
sach ty » sach y, sach tu, sach thu
nang co » nang cao, nang doc, nang noi
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
co loi » co hoi

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 co loi. ((hieu van) OR (thien van)) cau ((xuc va) or (tuc xa)) thanh lap cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang co loi. ((hieu van) OR (thien van)) cau ((xuc va) OR (tuc xa)) thanh lap cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang co loi. ((hieu van) OR (thien van)) cau ((xuc va) or (tuc xa)) thanh lap cua tre*".