Perhaps you should try some spelling variations:
sach van » sach han, sach va, bach van
van nang » van quang, van ban, van dong
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
vi su » va su, ve su, ki su

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 van nang xa hoi. hieu ve cam xuc ((van hanh) or (ban hanh)) vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach van nang xa hoi. hieu ve cam xuc ((van hanh) OR (ban hanh)) vi su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach van nang xa hoi. hieu ve cam xuc ((van hanh) or (ban hanh)) vi su triet*.