Perhaps you should try some spelling variations:
nhan loai » phan loai, nhan tai
dua tren » dung tren
dan loai » dang loai, phan loai, dang hoai
cham tuc » nham thuc, pham thuc, tham thuc
su sach » so sach, vu sach
sach tu » sach thu, cach tu, sach ty
cuu tre » cua tre, cau tren, cau treo
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
hung xa » chung xa, huong xa, hung ha
tu hung » tu chung, tu nhung, tu vung
tuc va » thuc va, truc va, tuc xa

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 tu hung xa hoi. hieu ve cham tuc va ((dan loai) OR (nhan loai)) ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tu hung xa hoi. hieu ve cham tuc va ((dan loai) OR (nhan loai)) ((dua tren) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tu hung xa hoi. hieu ve cham tuc va ((dan loai) OR (nhan loai)) ((dua tren) or (cuu tre))*".