Perhaps you should try some spelling variations:
dang loai » dang hoai, dang loi, dung loai
sach thu » sach thue, sach thieu, sach tham
thu hang » thi hang, thuc hanh, thu huong
dua tren » dung tren
cham tuc » nham thuc, pham thuc, tham thuc
dan loai » phan loai, nhan loai, dang hoai
su sach » so sach, vu sach
cuu tre » cua tre, cau tren, cau treo
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
hang xa » hoang xa, hang va, hang ca
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 thu hang xa hoi. hieu ve cham tuc va ((dan loai) OR (dang loai)) ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu hang xa hoi. hieu ve cham tuc va ((dan loai) OR (dang loai)) ((dua tren) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thu hang xa hoi. hieu ve cham tuc va ((dan loai) OR (dang loai)) ((dua tren) or (cuu tre))*".