Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
hanh tai » thanh tai, hang tai, han tai
van lam » van nam
tai cua » thai cua, tai cuc, tri cua
va hanh » van hanh, va thanh, va danh
van cam » van nam, van cau, van dam
nang xa » lang xa, nang ma, mang xa
sach ky » sac ky, sach y, sach ty
xuc va » duc va, tuc va, luc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky ((nang xa) or (nang x)) hoi. hieu ((van cam) OR (van lam)) xuc va hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky ((nang xa) OR (nang x)) hoi. hieu ((van cam) OR (van lam)) xuc va hanh tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ky ((nang xa) or (nang x)) hoi. hieu ((van cam) OR (van lam)) xuc va hanh tai cua te".
• Adding a wildcard symbol may retrieve word variants: hoc sach ky ((nang xa) or (nang x)) hoi. hieu ((van cam) OR (van lam)) xuc va hanh tai cua te*.