Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
su sach » so sach, vu sach
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va, loc va
va cua » va chua, via cua, ca cua

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) or (su sach)) ky ((nang xa) or (nang x)) hoi. hieu ve cam luc va hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (su sach)) ky ((nang xa) OR (nang x)) hoi. hieu ve cam luc va hanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (su sach)) ky ((nang xa) or (nang x)) hoi. hieu ve cam luc va hanh va cua tre*.