Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
sang tao » hang tai
cau dua » cau qua, cau cua, ca dua
cua tre » cuu tre, cua triet, dua tren
dua ban » dia ban, cua ban, qua ban
te sach » toc sach
van cau » van dau, van hau, van chat
sach ky » sac ky, sach y, sach ty
sang ma » tang ma, nang ma, mang may
cua te » cua tu

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 ky ((sang ma) or (sang tao)) hoa. hieu van cau dua ban thanh vai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((sang ma) OR (sang tao)) hoa. hieu van cau dua ban thanh vai ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((sang ma) or (sang tao)) hoa. hieu van cau dua ban thanh vai ((cua tre) OR (cua te))*".