Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh hai » thanh phan, thanh hoa, thanh san
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
nang mai » nang ma, nang tai, lang mai
cham dua » chay dua, cham giua, pham duc
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
dua ban » dia ban, cua ban, qua ban
hai cuc » tai cuc, hai cua, thai cua
cuc tre » duc tre, cua tre, cuu tre

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (doc sach)) ky nang mai hoi. hieu ve cham dua ban thanh hai cuc tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) ky nang mai hoi. hieu ve cham dua ban thanh hai cuc tre".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (doc sach)) ky nang mai hoi. hieu ve cham dua ban thanh hai cuc tre*.