Perhaps you should try some spelling variations:
tinh doi » trinh doc, trinh do, tinh hoc
tinh moi » dinh moi, sinh moi, tinh mo
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty ((nang xa) or (nang ma)) hoi. lieu va cam xuc va ((tinh moi) OR (tinh doi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (nang ma)) hoi. lieu va cam xuc va ((tinh moi) OR (tinh doi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang xa) or (nang ma)) hoi. lieu va cam xuc va ((tinh moi) OR (tinh doi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) or (nang ma)) hoi. lieu va cam xuc va ((tinh moi) OR (tinh doi)) cua tre*.