Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
te sach » toc sach
ky lang » ky dang, ky tang, tay lang
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
su tien » su kien, su hien, tu tieng
tuc va » thuc va, truc va, tuc xa
va dau » va dao
dau va » dau ve, lau va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ky lang) OR (ky nang)) xa hoi. hieu vu cham tuc va dau va su tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky lang) OR (ky nang)) xa hoi. hieu vu cham tuc va dau va su tien".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) OR (ky nang)) xa hoi. hieu vu cham tuc va dau va su tien*.