Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach thu » sach thue, sach thieu, sach tham
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
thu hanh » thuc hanh, thu thanh, thuy hanh
thuc va » thuc vat, thuc dan, thuc day
hanh xa » hanh va, hanh ma, hanh xu
tu sach » thu sach, su sach, te sach
ve nam » he nam, le nam, te nam
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 thu hanh xa hoi. hieu ((ve nam) or (va nam)) thuc va ((hanh vai) OR (hanh tai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu hanh xa hoi. hieu ((ve nam) OR (va nam)) thuc va ((hanh vai) OR (hanh tai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thu hanh xa hoi. hieu ((ve nam) or (va nam)) thuc va ((hanh vai) OR (hanh tai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach thu hanh xa hoi. hieu ((ve nam) or (va nam)) thuc va ((hanh vai) OR (hanh tai)) cua triet*.