Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cua thuoc » nha thuoc, cay thuoc, cua nuoc
thu sach » thuat sach, thuoc sach, thu hoach
nang mai » nang ma, nang tai, lang mai
thanh ve » hanh ve, thanh va, thanh vien
tu sach » su sach, te sach, tu cach
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
duc van » duc va, duc tan, duc manh
y nang » ky nang, ly nang, v nang
va cao » va cac, va co, va dao
ve cua » le cua, de cua, te cua

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) or (thu sach)) y nang mai hoi. hieu va cao duc van thanh ve cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang mai hoi. hieu va cao duc van thanh ve cua thuoc.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) y nang mai hoi. hieu va cao duc van thanh ve cua thuoc*.