Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
nam thuc » nam thuoc, am thuc, nam thu
thuc ban » thuoc ban, thuc dan, thu ban
thanh de » hanh de, thanh ve, thanh do
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
hieu le » hieu ve, hieu he, tieu le
hieu ly » hieu ky, lieu ly, dieu ly
y nang » ky nang, ly nang, v nang
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: vu sach y nang xa hoi. ((hieu le) OR (hieu ly)) nam thuc ban thanh de ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang xa hoi. ((hieu le) OR (hieu ly)) nam thuc ban thanh de ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang xa hoi. ((hieu le) OR (hieu ly)) nam thuc ban thanh de ((cua te) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. ((hieu le) OR (hieu ly)) nam thuc ban thanh de ((cua te) or (cua tu))*.