Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
su triet » su viet, su tien, ve triet
van hanh » ban hanh, van anh, van ban
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
ve cham » va cham, ve chat, vu cham
sach v » sach va, sach y, sach 2
ve cam » ve cac, va cam, ve cai
v nang » va nang, vu nang, van nang
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 v nang xa hoi. hieu ((ve cam) OR (ve cham)) xuc ((van hanh) or (van thanh)) vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang xa hoi. hieu ((ve cam) OR (ve cham)) xuc ((van hanh) OR (van thanh)) vi su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang xa hoi. hieu ((ve cam) OR (ve cham)) xuc ((van hanh) or (van thanh)) vi su triet".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang xa hoi. hieu ((ve cam) OR (ve cham)) xuc ((van hanh) or (van thanh)) vi su triet*.