Perhaps you should try some spelling variations:
danh kien » dinh kien, linh kien, van kien
tham thuc » nham thuc, pham thuc, tam thuc
danh viet » anh viet, ninh viet, nang viet
thuc day » thuc dan, thuc vat
doc cac » duoc cac, hoc cac, do cac
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc cac ky nang xa hoi. hieu va tham thuc day ((danh kien) OR (danh viet)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc cac ky nang xa hoi. hieu va tham thuc day ((danh kien) OR (danh viet)) cua tre".
• Adding a wildcard symbol may retrieve word variants: doc cac ky nang xa hoi. hieu va tham thuc day ((danh kien) OR (danh viet)) cua tre*.