Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
toc sach » hoc sach, doc sach, thuoc sach
thai cua » than cua, tai cuc, tri cua
nang mai » nang ma, nang tai, lang mai
dua ban » dia ban, cua ban, qua ban
hai cuc » tai cuc, hai cua, hai huoc
cam dua » ca dua, cay dua, chay dua
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
ve cam » ve cham, ve cac, va cam

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 ty nang mai hoi. hieu ve cam dua ban thanh ((hai cuc) OR (thai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang mai hoi. hieu ve cam dua ban thanh ((hai cuc) OR (thai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang mai hoi. hieu ve cam dua ban thanh ((hai cuc) OR (thai cua)) tre*.