Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
hieu va » lieu va
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
di cua » dai cua, doi cua, de 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 y ((nang xa) or (nang ma)) hoi. ((hieu va) or (hieu qua)) cam xuc va hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((nang xa) OR (nang ma)) hoi. ((hieu va) OR (hieu qua)) cam xuc va hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y ((nang xa) or (nang ma)) hoi. ((hieu va) or (hieu qua)) cam xuc va hanh di cua tre*.