Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
lap cua » lai cua, tap cua, lam cua
van lam » van nam
van cam » van nam, van cau, van dam
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, luc va, xac va
tuc va » thuc va, truc va, tuc xa
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 cam) OR (van lam)) ((xuc va) or (tuc va)) 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 cam) OR (van lam)) ((xuc va) OR (tuc va)) 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 cam) OR (van lam)) ((xuc va) or (tuc va)) thanh lap cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang co loi. hieu ((van cam) OR (van lam)) ((xuc va) or (tuc va)) thanh lap cua tre*.