Perhaps you should try some spelling variations:
thuoc ban » thuoc tan, thuoc dang, thu ban
thanh di » thanh doi, thanh de, thanh do
thuc ban » thuc dan, thu ban, thuc van
sach ty » sach tu, sach thu, xach tay
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve nam » he nam, va nam, le nam
di cua » dai cua, doi cua, de cua
cua su » qua su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ty) OR (sach y)) nang xa hoi. hieu ve nam ((thuc ban) OR (thuoc ban)) thanh di cua su~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ty) or (sach y)) nang xa hoi. hieu ve nam ((thuc ban) OR (thuoc ban)) thanh di cua su~".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ty) or (sach y)) nang xa hoi. hieu ve nam ((thuc ban) OR (thuoc ban)) thanh di cua su*.