Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
su tien » su kien, su hien, tu tieng
y nang » ky nang, ly nang, v nang
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 y nang xa hoi. hieu ((ve cam) or (va cac)) xuc ((va danh) or (ban thanh)) vi su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((ve cam) OR (va cac)) xuc ((va danh) OR (ban thanh)) vi su tien.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((ve cam) or (va cac)) xuc ((va danh) or (ban thanh)) vi su tien*.