Perhaps you should try some spelling variations:
vu triet » su triet, ve triet, va triet
hanh lam » thanh lap, hanh kem, hanh va
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty hang, ly nang
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
lam vu » sam vu

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 ((ty nang) OR (ty xang)) xa hoi. hieu ((ve cam) or (ve cac)) xuc va hanh lam vu triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty xang)) xa hoi. hieu ((ve cam) OR (ve cac)) xuc va hanh lam vu 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 cam) or (ve cac)) xuc va hanh lam vu triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) OR (ty xang)) xa hoi. hieu ((ve cam) or (ve cac)) xuc va hanh lam vu triet*.