Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
ty hang » ty xang, thi hang, thu hang
ly hang » ly quang
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
ve cam » ve cham, ve cac, va cam
xuc va » tuc va, luc va, xac va
cua su » qua su

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 hang) OR (ly hang)) xa hoi. hieu ve cam ((xuc va) or (duc va)) hanh vai cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty hang) OR (ly hang)) xa hoi. hieu ve cam ((xuc va) OR (duc va)) hanh vai cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty hang) OR (ly hang)) xa hoi. hieu ve cam ((xuc va) or (duc va)) hanh vai cua su".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty hang) OR (ly hang)) xa hoi. hieu ve cam ((xuc va) or (duc va)) hanh vai cua su*.