Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh doi » thanh doi, hanh noi, hang doi
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
va hanh » van hanh, va thanh, va danh
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet

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

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