Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
chat tuc » chat xuc, luat tuc, chat huu
hieu ve » hieu va, hieu van
danh ve » dinh ve, hanh ve, anh ve
va danh » va dinh, va dan, va hanh
ve chat » va chat, van chat
te sach » toc sach
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
su viet » so viet
tuc va » thuc va, truc va, tuc xa
ve su » va 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) or (thuoc sach)) ky ((nang xa) OR (lang xa)) hoi. hieu ve chat tuc va danh ve su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) ky ((nang xa) OR (lang xa)) hoi. hieu ve chat tuc va danh ve su viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuoc sach)) ky ((nang xa) OR (lang xa)) hoi. hieu ve chat tuc va danh ve su viet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) ky ((nang xa) OR (lang xa)) hoi. hieu ve chat tuc va danh ve su viet*.