Perhaps you should try some spelling variations:
cham truc » cau truc, nham thuc, pham thuc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
truc va » thuc va, thuc vat, trung va
va dau » va dao
vi su » ve su, ki su, oi su

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 dang xa hoi. hieu vu cham truc va dau ((vi su) OR (va su)) tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang xa hoi. hieu vu cham truc va dau ((vi su) OR (va su)) tien*".