Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
chua tre » chua tri, cua tre, chua trieu
thanh va » hanh va, thanh ha, thanh ve
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa

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 sang ma hoi. hieu ((ve cham) or (va cam)) xuc va ((thanh va) OR (thanh van)) chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang ma hoi. hieu ((ve cham) OR (va cam)) xuc va ((thanh va) OR (thanh van)) chua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky sang ma hoi. hieu ((ve cham) or (va cam)) xuc va ((thanh va) OR (thanh van)) chua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang ma hoi. hieu ((ve cham) or (va cam)) xuc va ((thanh va) OR (thanh van)) chua tre*.