Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
dua tren » dung tren
dung co » dung cho, dung cong, dung cua
va dung » van dung, va duong, vat dung
ve cham » va cham, ve chat, vu cham
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
nang xa » lang xa, nang ma, mang xa
cuu tre » cua tre, cau tren, cau treo
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 y ((nang xa) OR (nang x)) hoi. hieu ve cham tuc va dung co ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang xa) OR (nang x)) hoi. hieu ve cham tuc va dung co ((dua tren) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((nang xa) OR (nang x)) hoi. hieu ve cham tuc va dung co ((dua tren) or (cuu tre))*".