Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
chat cuc » chat cua, chat xuc, chi cuc
thanh vi » hanh vi, thanh va, thanh ve
sach thu » sach thue, sach thieu, sach tham
cua tre » cuu tre, cua triet, dua tren
cuc ban » cua ban, cac ban, cuu ban
va chat » van chat, va phat, cao chat
sach ty » sach y, sach tu, xach tay
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
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 ty) or (sach thu)) nang xa hoi. hieu va chat cuc ban thanh vi ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) nang xa hoi. hieu va chat cuc ban thanh vi ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sach thu)) nang xa hoi. hieu va chat cuc ban thanh vi ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) nang xa hoi. hieu va chat cuc ban thanh vi ((cua tre) OR (cua te))*.