Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
va chat » van chat, va phat, cao chat
tu sach » thu sach, su sach, tu cach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
va cham » va tham
v nang » va nang, vu nang, van nang
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) v nang xa hoi. hieu ((va cham) OR (va chat)) xuc van hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) v nang xa hoi. hieu ((va cham) OR (va chat)) xuc van hanh vi su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) v nang xa hoi. hieu ((va cham) OR (va chat)) xuc van hanh vi su triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) v nang xa hoi. hieu ((va cham) OR (va chat)) xuc van hanh vi su triet*.