Perhaps you should try some spelling variations:
hanh vii » hanh voi, hanh va, hanh noi
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
cam duc » cam xuc, cao duc, pham duc
sach tu » sach thu, cach tu, sach ty
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
va cam » va cham, va cac, va cao

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 tu ((nang xa) or (dang xay)) hoi. hieu va cam duc va ((hanh vii) or (hanh vi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu ((nang xa) OR (dang xay)) hoi. hieu va cam duc va ((hanh vii) OR (hanh vi)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach tu ((nang xa) or (dang xay)) hoi. hieu va cam duc va ((hanh vii) or (hanh vi)) cuu tre*.