Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
toc sach » hoc sach, doc sach, thuoc sach
su triet » su tien
ve triet » va trien
sach ky » sac ky, sach y, sach ty
hac duc » hoc duc, ha duc, thach duc
duc gia » quoc gia
su viet » so viet
va hac » van hac, va khac, va cac
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: toc sach ky nang x hoi. lieu va hac duc gia thanh hai ((((su triet) or (su viet))) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang x hoi. lieu va hac duc gia thanh hai ((((su triet) OR (su viet))) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang x hoi. lieu va hac duc gia thanh hai ((((su triet) or (su viet))) or (ve triet))*.