Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
cham luc » cham soc, nhan luc, cham cuu
luc ban » duc ban, cuc ban, luc bat
va cham » va chat, va tham
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
sach ty » sach y, sach thu, xach tay
sach tu » sach thu, cach tu, sach uu
ma hoi » mai hoi, ma hoa, me hoi

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 tu)) sang ((ma hoi) or (xa hoi)). hieu va cham luc ban thanh vai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) sang ((ma hoi) OR (xa hoi)). hieu va cham luc ban thanh vai cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach tu)) sang ((ma hoi) or (xa hoi)). hieu va cham luc ban thanh vai cua vat".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach tu)) sang ((ma hoi) or (xa hoi)). hieu va cham luc ban thanh vai cua vat*.