Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc va » thuc va, thuoc ma, thuong va
va thanh » gia thanh, ban thanh, va tinh
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang ro » nang co, nang ho, nang rong
nang ra » nang ma, lang ra, nang va
vai cua » dai cua, hai cua, lai cua
va nam » van nam, ha nam, va nay
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky ((nang ro) or (nang ra)) hoi. lieu va nam thuoc va thanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((nang ro) OR (nang ra)) hoi. lieu va nam thuoc va thanh vai cua tu.
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((nang ro) or (nang ra)) hoi. lieu va nam thuoc va thanh vai cua tu*.