Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
lang dai » lang hai, lang mai, lang chai
dai khoi » dai hoi, dai khoa, mai khoi
cham tuc » nham thuc, pham thuc, tham thuc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
hanh va » hang va, hanh vi
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 lang dai khoi. hieu ve cham tuc va ((thanh van) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang dai khoi. hieu ve cham tuc va ((thanh van) OR (hanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang dai khoi. hieu ve cham tuc va ((thanh van) or (hanh va)) cua tre*.