Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
bat thanh » ban thanh, bac thanh, dat thanh
su triet » su tien, ve triet
te sach » toc sach
luc bat » suc bat, luc nhat, luat bat
sach ty » sach y, sach tu, sach thu
van lam » van nam
van cam » van nam, van cau, van dam
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
su viet » so viet

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: te sach ty nang xa hoi. hieu ((van cam) OR (van lam)) luc bat thanh dai ((su triet) OR (su viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu ((van cam) or (van lam)) luc bat thanh dai ((su triet) OR (su viet))~".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu ((van cam) or (van lam)) luc bat thanh dai ((su triet) OR (su viet))*.