Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
van thanh » ban thanh, van tuan
sach thu » sach thue, sach thieu, sach tham
lang hoa » hang hoa, lang ha, nang hoa
sach ty » sach y, sach tu, xach tay
hoa hoi » khoa hoi, hoa hoc, hoa doi
thu van » thuc van, thuy van, tu van
le nam » he nam, le na, te nam
vai su » va su, van su, lai su
kien » bien, vien, tien

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) OR (sach thu)) lang hoa hoi. hieu ((le nam) or (ly nam)) thu van thanh vai su kien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) lang hoa hoi. hieu ((le nam) OR (ly nam)) thu van thanh vai su kien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach thu)) lang hoa hoi. hieu ((le nam) or (ly nam)) thu van thanh vai su kien".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach thu)) lang hoa hoi. hieu ((le nam) or (ly nam)) thu van thanh vai su kien*.