Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
van thanh » ban thanh, van tuan
su triet » su viet, su tien, ve triet
thu van » thuc van, thuy van, tu van
hieu le » hieu ve, hieu he, hieu ly
te sach » toc sach
ty lang » tay lang, ty hang, tu lang
hoa hoi » khoa hoi, hoa hoc, hoa doi
hoa dai » hoa dan, hoc dai
le nam » ly nam, he nam, le na
vai su » va su, van su, lai su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ty lang) OR (ty xang)) ((hoa hoi) or (hoa dai)). hieu le nam thu van thanh vai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty lang) OR (ty xang)) ((hoa hoi) OR (hoa dai)). hieu le nam thu van thanh vai su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty lang) OR (ty xang)) ((hoa hoi) or (hoa dai)). hieu le nam thu van thanh vai su triet*".