Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thi hang » thi nang, thi hong, thi thanh
hanh tai » thanh tai, hang tai, han tai
thi hanh » thi thanh
hanh vai » hanh vi, hanh va, hanh van
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
thu xa » thu xac, thu ha, thu xe
va nam » van nam, ha nam, va nay

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