Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
thuoc va » thuc va, thuoc ma, thuong va
su sach » so sach, vu sach
nang ro » nang co, nang ho, nang rong
vai cua » dai cua, hai cua, lai cua
nang ra » nang ma, lang ra, nang va
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
va nam » van nam, ha nam, va nay
va cay » va cac, va cao, va cai
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: su sach ky ((nang ro) or (nang ra)) hoi. lieu ((va nam) or (va cay)) thuoc va hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang ro) OR (nang ra)) hoi. lieu ((va nam) OR (va cay)) thuoc va hanh vai cua tu.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang ro) or (nang ra)) hoi. lieu ((va nam) or (va cay)) thuoc va hanh vai cua tu*.