Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thu chang » thu hang, thu thang, thi chang
chang xu » chang xue, chao xu, thong xu
hieu van » hieu va, thien van, lieu va
sach thu » sach thue, sach thieu, sach tham
va thanh » gia thanh, va tinh, le thanh
te sach » toc sach
cua tre » cuu tre, cua triet, dua tren
cau duc » cao duc, cau luc, chu duc
van cau » van dau, van hau, van chat
xu hoi » xa hoi, lu hoi, vu hoi
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 thu chang xu hoi. hieu van cau duc ((va thanh) or (ban thanh)) di ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu chang xu hoi. hieu van cau duc ((va thanh) OR (ban thanh)) di ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu chang xu hoi. hieu van cau duc ((va thanh) or (ban thanh)) di ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach thu chang xu hoi. hieu van cau duc ((va thanh) or (ban thanh)) di ((cua tre) OR (cua te))*.