Perhaps you should try some spelling variations:
dan thanh » dang thanh, danh thanh, ban thanh
thanh loi » thanh hoa, thanh hai, thanh lap
tac dung » sach dung, xay dung, tin dung
dung dan » dung dat, dung san, tung dan
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
ve tac » va tac, ve cac, ve tai
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 y nang x hoi. hieu ve tac dung dan thanh loi ((su triet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ve tac dung dan thanh loi ((su triet) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ve tac dung dan thanh loi ((su triet) or (cua te))*.