Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
cham tuc » nham thuc, pham thuc, tham thuc
dang xay » dang van, van xay
su sach » so sach, vu sach
cua tre » cuu tre, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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 ((nang xa) or (dang xay)) hoi. hieu ve cham tuc va hanh vi ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu ((nang xa) OR (dang xay)) hoi. hieu ve cham tuc va hanh vi ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thu ((nang xa) or (dang xay)) hoi. hieu ve cham tuc va hanh vi ((cua tre) OR (cua te))*".