Perhaps you should try some spelling variations:
ban hanh » ban hang
su triet » su viet, su tien, ve triet
vu sach » vu bach, vu khach
su sach » so sach
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
van anh » van thanh, tuan anh, van minh
va dau » va dao
dai su » dai sua, dai so, dan su

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) OR (su sach)) tu nang xa hoi. lieu va dau tu ((van anh) or (ban hanh)) dai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) tu nang xa hoi. lieu va dau tu ((van anh) OR (ban hanh)) dai su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (su sach)) tu nang xa hoi. lieu va dau tu ((van anh) or (ban hanh)) dai su triet".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (su sach)) tu nang xa hoi. lieu va dau tu ((van anh) or (ban hanh)) dai su triet*.