Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
xa thanh » va thanh, ha thanh, ta thanh
thanh de » hanh de, thanh ve, thanh do
su sach » vu sach
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
va pham » van pham, va phat, va phap
thuc xa » thuc xay, tuc xa, thuc va
cua tre » cua te, cuu tre, cua triet
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) OR (so sach)) ky nang xa hoi. lieu va pham thuc xa thanh de cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky nang xa hoi. lieu va pham thuc xa thanh de cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ky nang xa hoi. lieu va pham thuc xa thanh de cua tre*.