Perhaps you should try some spelling variations:
ban hanh » ban hang
su sach » so sach, vu sach
nang xa » nang x, lang xa, mang xa
hoi cua » hoi chuc
doi cua » dai cua
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
dau tuc » dau tu, dao tuc, cau truc
tuc ban » thuc ban, truc ban, tu ban
va dau » va dao

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 ty ((nang xa) or (nang ma)) hoi. lieu va dau tuc ban hanh ((doi cua) or (hoi cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (nang ma)) hoi. lieu va dau tuc ban hanh ((doi cua) OR (hoi cua)) te.
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) or (nang ma)) hoi. lieu va dau tuc ban hanh ((doi cua) or (hoi cua)) te*.