Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
hang dao » hang dau, hung dao, hang dam
dao thoi » dao thi, ao thoi, dao thai
hac dua » hat dua, hoc dua, khac duan
cuu tre » cua tre, cau tren, cau treo
dua ban » dia ban, cua ban, qua ban
tu sach » thu sach, te sach, tu cach
van hac » van hoc, van ha, van hai
ty hang » ly hang, ty xang, thi hang
su sach » so sach, vu sach
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: ((tu sach) OR (su sach)) ty hang dao thoi. hieu van hac dua ban thanh tai ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty hang dao thoi. hieu van hac dua ban thanh tai ((cuu tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ty hang dao thoi. hieu van hac dua ban thanh tai ((cuu tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ty hang dao thoi. hieu van hac dua ban thanh tai ((cuu tre) or (cua te))*.