Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, pham thu
nham thuc » nhan thuc, nam thuc, nham thu
xa thanh » va thanh, ha thanh, ta thanh
thanh de » hanh de, thanh ve, thanh do
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
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 ky nang xa hoi. lieu va ((pham thuc) OR (nham thuc)) xa thanh de cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. lieu va ((pham thuc) OR (nham thuc)) xa thanh de cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. lieu va ((pham thuc) OR (nham thuc)) xa thanh de cua tre*.