Perhaps you should try some spelling variations:
sang than » cang thang, dang thanh, sang tao
thu sach » tu sach, thuat sach, thuoc sach
hang tai » hang va, dung tai
hieu van » hieu va, thien van, lieu va
lang mai » lang dai, lang hai, lang man
sach ky » sac ky, sach y, sach ty
van cam » van nam, van lam, van cau
tai cuu » tai cuc, tai buu, tai cua
cuu tre » cua tre, cau tren, cau treo
xuc va » tuc va, luc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky ((lang mai) or (sang than)) hoi. hieu van cam ((xuc va) OR (duc va)) hang tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((lang mai) OR (sang than)) hoi. hieu van cam ((xuc va) OR (duc va)) hang tai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky ((lang mai) or (sang than)) hoi. hieu van cam ((xuc va) OR (duc va)) hang tai cuu tre*".