Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuc ban » thuoc ban, thuc dan, thu ban
thu sach » thuat sach, thuoc sach, thu hoach
hanh via » hanh vi, anh va, hanh ve
hanh va » hang va, hanh vi
tu sach » su sach, te sach, tu cach
hieu va » lieu va, hieu qua
x hoi » xa hoi, o hoi, x ho
va am » va lam, va cam

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) or (thu sach)) ky nang x hoi. hieu va am thuc ban ((hanh via) OR (hanh va)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang x hoi. hieu va am thuc ban ((hanh via) OR (hanh va)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky nang x hoi. hieu va am thuc ban ((hanh via) OR (hanh va)) cua triet*".