Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
nang tai » hang tai, tang tai, nang cao
sang tai » hang tai, sang tao, tang tai
cap nuoc » dat nuoc
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ve cap » ve cac, le cap, ve cai

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 ((nang tai) or (sang tai)) hoi. hieu ve cap nuoc va thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang tai) OR (sang tai)) hoi. hieu ve cap nuoc va thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang tai) or (sang tai)) hoi. hieu ve cap nuoc va thanh dai cua tre*.