Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
ky tang » ky dang, kho tang, ky trong
hieu ve » hieu va, hieu van
cac tuc » cac toc, cac tu, cac tac
dan lai » dan loai, dan lap, dan lat
su tien » su kien, su hien, tu tieng
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ky tang) or (ky nang)) xa hoi. hieu ve cac tuc va dan lai su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky tang) OR (ky nang)) xa hoi. hieu ve cac tuc va dan lai su tien.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky tang) or (ky nang)) xa hoi. hieu ve cac tuc va dan lai su tien*.