Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
va triet » va thiet, va trien, ve triet
thanh di » thanh doi, thanh de, thanh do
va thanh » gia thanh, ban thanh, va tinh
hien cac » thien cac, vien cac, hieu cac
nang xa » lang xa, nang ma, mang xa
cac tuc » cac toc, cac tu, cac tac
su sach » so sach
vu sach » vu bach, vu khach
tuc va » thuc va, truc va, tuc xa
di va » dai va, di vao, doi va

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)) ky ((nang xa) OR (nang x)) hoi. bieu hien cac tuc va thanh di va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ky ((nang xa) OR (nang x)) hoi. bieu hien cac tuc va thanh di va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (su sach)) ky ((nang xa) OR (nang x)) hoi. bieu hien cac tuc va thanh di va triet".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (su sach)) ky ((nang xa) OR (nang x)) hoi. bieu hien cac tuc va thanh di va triet*.