Perhaps you should try some spelling variations:
thanh dinh » thanh binh, thanh tinh, thanh vinh
dinh cuu » dinh chi
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
thuc va » thuc vat, thuc dan, thuc day
van cam » van nam, van lam, van cau
dang ha » dong ha, dung ha, tang ha
lang ha » long ha
cuu tre » cua tre, cau tren, cau treo
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 y ((dang ha) OR (lang ha)) hoi. hieu van cam ((xuc va) or (thuc va)) thanh dinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((dang ha) OR (lang ha)) hoi. hieu van cam ((xuc va) OR (thuc va)) thanh dinh cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y ((dang ha) OR (lang ha)) hoi. hieu van cam ((xuc va) or (thuc va)) thanh dinh cuu tre".
• Adding a wildcard symbol may retrieve word variants: so sach y ((dang ha) OR (lang ha)) hoi. hieu van cam ((xuc va) or (thuc va)) thanh dinh cuu tre*.