Perhaps you should try some spelling variations:
thanh dinh » thanh binh, thanh tinh, thanh vinh
hanh dinh » hinh dinh, hanh tinh, anh dinh
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
lam xuc » cam xuc, lam duoc
van lam » van nam
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
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: tu sach y ((sang ma) or (nang ma)) hoi. hieu van lam xuc va ((hanh dinh) OR (thanh dinh)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((sang ma) OR (nang ma)) hoi. hieu van lam xuc va ((hanh dinh) OR (thanh dinh)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((sang ma) or (nang ma)) hoi. hieu van lam xuc va ((hanh dinh) OR (thanh dinh)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((sang ma) or (nang ma)) hoi. hieu van lam xuc va ((hanh dinh) OR (thanh dinh)) cuu tre*.