Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
ban thanh » ban hanh, ban hang
toc sach » hoc sach, doc sach, thuoc sach
phan cuc » phan duc, phan cac, pham cuc
ve cham » va cham, ve chat, vu cham
dua ban » dia ban, cua ban, qua ban
cuc tre » duc tre, cua tre, cuu tre
sach ty » sach y, sach tu, sach thu
lai hoi » dai hoi, lai hoa, lai roi
mai hoi » mai khoi, dai hoi, mai doi
ty nang » ky nang, ty xang, ty hang
ve cam » ve cac, va cam, ve cai

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) or (lai hoi)). hieu ((ve cam) OR (ve cham)) dua ban thanh phan cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang ((mai hoi) OR (lai hoi)). hieu ((ve cam) OR (ve cham)) dua ban thanh phan cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang ((mai hoi) or (lai hoi)). hieu ((ve cam) OR (ve cham)) dua ban thanh phan cuc tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang ((mai hoi) or (lai hoi)). hieu ((ve cam) OR (ve cham)) dua ban thanh phan cuc tre*.