Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
chat thuc » thuat thuc, nhan thuc, chat thai
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
luu tre » cuu tre, luy tre
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
tru » truc

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