Perhaps you should try some spelling variations:
lieu van » hieu van, sieu van, lieu nano
bao thuc » cao thuoc, am thuc, va thuc
hanh lai » hanh lam, hanh tai, thanh lap
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
su viet » so viet

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 (su sach)) ky nang xa hoi. ((lieu van) or (lieu va)) bao thuc va hanh lai su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xa hoi. ((lieu van) OR (lieu va)) bao thuc va hanh lai su viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky nang xa hoi. ((lieu van) or (lieu va)) bao thuc va hanh lai su viet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky nang xa hoi. ((lieu van) or (lieu va)) bao thuc va hanh lai su viet*.