Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
toc sach » hoc sach, doc sach, thuoc sach
van tuan » van quan, van ban, anh tuan
va thanh » gia thanh, ban thanh, va tinh
van tai » von tai
sach ty » sach y, sach tu, sach thu
cao hoi » cau hoi, co hoi, cao hoc
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang cao hoi. hieu ((van tai) or (van tuan)) tuc va thanh lap ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang cao hoi. hieu ((van tai) OR (van tuan)) tuc va thanh lap ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang cao hoi. hieu ((van tai) or (van tuan)) tuc va thanh lap ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang cao hoi. hieu ((van tai) or (van tuan)) tuc va thanh lap ((cua tre) OR (cuu tre))*.