Perhaps you should try some spelling variations:
chua tre » chua tri, cua tre, chua trieu
nang mai » nang tai, lang mai, nang cai
ve cham » va cham, ve chat, vu cham
va chua » vua chua, ca chua, va chu
hanh va » hang va, hanh vi
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
xac va » tac va, ac va, bac va

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

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