Perhaps you should try some spelling variations:
dinh toi » dinh thi, dinh moi, dinh so
dinh tri » chinh tri
su sach » so sach, vu sach
ty nang » ky nang, ty hang, ly nang
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ty nang) or (ty xang)) xa hoi. hieu ve cac xuc va ((dinh toi) OR (dinh tri)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ty xang)) xa hoi. hieu ve cac xuc va ((dinh toi) OR (dinh tri)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) or (ty xang)) xa hoi. hieu ve cac xuc va ((dinh toi) OR (dinh tri)) cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) or (ty xang)) xa hoi. hieu ve cac xuc va ((dinh toi) OR (dinh tri)) cua te*.