Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
sach ty » sach y, sach thu, xach tay
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
buu tre » cuu tre
nang ma » tang ma, sang ma, nang cao
sach tu » sach thu, cach tu, sach uu
va cam » va cham, va cac, va cao
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 ty) or (sach tu)) ((nang ma) or (nang x)) hoi. hieu va cam tuc va hanh tai buu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) ((nang ma) OR (nang x)) hoi. hieu va cam tuc va hanh tai buu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach tu)) ((nang ma) or (nang x)) hoi. hieu va cam tuc va hanh tai buu tre*.