Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
van bao » van ban, van dao
bao xuc » bao luc, bao thuc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty ((nang xa) OR (lang xa)) hoi. hieu van bao xuc va hanh trinh cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty ((nang xa) OR (lang xa)) hoi. hieu van bao xuc va hanh trinh cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach ty ((nang xa) OR (lang xa)) hoi. hieu van bao xuc va hanh trinh cua tre*.