Perhaps you should try some spelling variations:
vu triet » su triet, ve triet, va triet
van hanh » van thanh, ban hanh, van anh
vien cac » vien bach, vien dai, vien da
sach ty » sach y, sach tu, sach thu
va hanh » va thanh, va danh, ban hanh
tu sach » thu sach, su sach, te sach
ve cam » ve cham, ve cac, va cam
xang x » nang x
sam vu » lam vu
x hoi » xa hoi, o hoi, x ho

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: tu sach ty xang x hoi. hieu ((ve cam) OR (vien cac)) xuc ((va hanh) OR (van hanh)) sam vu triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty xang x hoi. hieu ((ve cam) or (vien cac)) xuc ((va hanh) OR (van hanh)) sam vu triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang x hoi. hieu ((ve cam) or (vien cac)) xuc ((va hanh) OR (van hanh)) sam vu triet*.