Perhaps you should try some spelling variations:
thanh dam » thanh dat, thanh nam, thanh tam
kho tang » cao tang
cham tuc » nham thuc, pham thuc, tham thuc
tu sach » thu sach, su sach, te sach
va cham » va chat, va tham
hieu va » lieu va, hieu qua
van hoc » van hoa
ky tang » ky nang, ky dang, ky trong
cua tre » cua te, cuu tre, cua triet
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: tu sach ((ky tang) OR (kho tang)) van hoc. hieu va cham tuc va ((thanh dam) or (lanh dao)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky tang) OR (kho tang)) van hoc. hieu va cham tuc va ((thanh dam) OR (lanh dao)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky tang) OR (kho tang)) van hoc. hieu va cham tuc va ((thanh dam) or (lanh dao)) cua tre*".