Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
danh dau » lanh dao, hang dau, danh tu
danh vai » danh sai, danh va, doanh van
thuc va » thuc vat, thuc dan, thuc day
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
nang o » nang co, nang ho, nang ro
ve am » va am
o hoi » co hoi, o hoc, o hai

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 ky nang o hoi. hieu ve am thuc va ((((danh vai) or (hang va))) or (danh dau)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang o hoi. hieu ve am thuc va ((((danh vai) OR (hang va))) OR (danh dau)) su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang o hoi. hieu ve am thuc va ((((danh vai) or (hang va))) or (danh dau)) su triet*.