Perhaps you should try some spelling variations:
ban hanh » ban hang
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
vu cham » va cham, vu kham, tu cham
xuc ban » duc ban, cuc ban, quoc ban
ve cam » ve cham, ve cac, va cam
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang xa hoi. hieu ((ve cam) or (vu cham)) xuc ban hanh ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu ((ve cam) OR (vu cham)) xuc ban hanh ((vi cua) OR (di cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu ((ve cam) or (vu cham)) xuc ban hanh ((vi cua) or (di cua)) tre*.