Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh tai » thanh tai, hang tai, han tai
van chat » cao chat
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
te sach » toc sach
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, tu cach
van ha » van hoa, van hanh, van phan
tai su » tai so, tai tu, lai su

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) OR (te sach)) ty nang xa hoi. hieu ((van ha) OR (van chat)) duc va hanh tai su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ty nang xa hoi. hieu ((van ha) or (van chat)) duc va hanh tai su triet~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ty nang xa hoi. hieu ((van ha) or (van chat)) duc va hanh tai su triet*.