Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
cam duc » cam xuc, cao duc, pham duc
vai cua » dai cua, hai cua, lai cua
sach ty » sach y, sach tu, sach thu
duc ban » duc tan, duc van, dua ban
sach ly » sach y, sach lo, sach hay
mai hoi » mai khoi, dai hoi, lai hoi
cua te » cua tu
va cam » va cham, va cac, va cao
ma hoi » xa 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: thuoc ((sach ly) or (sach ty)) nang ((ma hoi) OR (mai hoi)). lieu va cam duc ban thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc ((sach ly) OR (sach ty)) nang ((ma hoi) OR (mai hoi)). lieu va cam duc ban thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc ((sach ly) or (sach ty)) nang ((ma hoi) OR (mai hoi)). lieu va cam duc ban thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc ((sach ly) or (sach ty)) nang ((ma hoi) OR (mai hoi)). lieu va cam duc ban thanh vai cua te*.