Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
danh kien » dinh kien, linh kien, van kien
danh viet » anh viet, ninh viet, nang viet
doc sach » hoc sach, toc sach, nuoc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
thuc va » thuc vat, thuc dan, thuc day
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 sach ky nang xa hoi. hieu va pham thuc va ((danh kien) OR (danh viet)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach ky nang xa hoi. hieu va pham thuc va ((danh kien) OR (danh viet)) cua tre".
• Adding a wildcard symbol may retrieve word variants: doc sach ky nang xa hoi. hieu va pham thuc va ((danh kien) OR (danh viet)) cua tre*.