Perhaps you should try some spelling variations:
chat thuc » thuat thuc, nhan thuc, chat thai
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
luu tre » luu tru, cuu tre
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
luy tre » luyen tre

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)) ky nang xa hoi. hieu ve chat thuc va hanh vi ((luu tre) OR (luy tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu ve chat thuc va hanh vi ((luu tre) OR (luy tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky nang xa hoi. hieu ve chat thuc va hanh vi ((luu tre) OR (luy tre))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang xa hoi. hieu ve chat thuc va hanh vi ((luu tre) OR (luy tre))*.