Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hang tai » hang va, dung tai
hanh lai » hanh lam, hanh tai, thanh lap
duc van » duc va, duc tan, duc manh
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ty nang » ky nang, ty hang, ly nang
ve pham » vi pham, v pham, ve phan

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