Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
van thanh » ban thanh, van tuan
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
su triet » su tien, ve triet
xuc van » duc van, luc van, vuc van
tu sach » thu sach, su sach, te sach
cac xuc » cam xuc, cac nuoc, chat xuc
sach ky » sac ky, sach y, sach ty
su viet » so viet
ma hoi » mai hoi, ma hoa, me hoi

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 ky nang ((ma hoi) or (xa hoi)). hieu vien cac xuc van thanh lai ((su triet) OR (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((ma hoi) OR (xa hoi)). hieu vien cac xuc van thanh lai ((su triet) OR (su viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ((ma hoi) or (xa hoi)). hieu vien cac xuc van thanh lai ((su triet) OR (su viet))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((ma hoi) or (xa hoi)). hieu vien cac xuc van thanh lai ((su triet) OR (su viet))*.