Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai, thanh lap
hieu van » hieu va, thien van, lieu va
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
co sach » bo sach, cuon sach, hoc sach
van cam » van nam, van lam, van cau
xuc van » duc van, luc van, xuc ban
vuc van » duc van, luc van, thuc van
loi su » loai su, loi tu, lai su
x hoi » xa hoi, o hoi, x ho

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) or (co sach)) ky nang x hoi. hieu van cam ((xuc van) OR (vuc van)) thanh loi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (co sach)) ky nang x hoi. hieu van cam ((xuc van) OR (vuc van)) thanh loi su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (co sach)) ky nang x hoi. hieu van cam ((xuc van) OR (vuc van)) thanh loi su triet*".