Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
ban hang » ngan hang
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van bac » van ban, van bao, van hac
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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