Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
duy sang » duy van, duy can, duy anh
tu sach » thu sach, su sach, te sach
nam xuc » cam xuc, nam xua, nam thuc
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, ma hoa, me hoi
y sang » _ sang
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
vi cuu » vi luu, vinh cuu

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) OR (duy sang)) ((ma hoi) or (xa hoi)). hieu van nam xuc va dan vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y sang) OR (duy sang)) ((ma hoi) OR (xa hoi)). hieu van nam xuc va dan vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y sang) OR (duy sang)) ((ma hoi) or (xa hoi)). hieu van nam xuc va dan vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y sang) OR (duy sang)) ((ma hoi) or (xa hoi)). hieu van nam xuc va dan vi cuu tre*.