Perhaps you should try some spelling variations:
nam thuoc » nam thu, nha thuoc, cay thuoc
nam thuc » am thuc, nam thu, nam tu
hang tai » hang va, dung tai
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
lieu ha » lieu nha, lieu va, liem ha
xa hang » va hang, xa bang, xa hung
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
tu sac » tu cac, tu san, tu bac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu sach)) ky nang xa hoi. lieu ha ((nam thuc) OR (nam thuoc)) xa hang tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky nang xa hoi. lieu ha ((nam thuc) OR (nam thuoc)) xa hang tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu sach)) ky nang xa hoi. lieu ha ((nam thuc) OR (nam thuoc)) xa hang tai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu sach)) ky nang xa hoi. lieu ha ((nam thuc) OR (nam thuoc)) xa hang tai cua tre*.