Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
kinh di » kinh do, minh di, kinh dien
va dat » va dao, va dau, va dap
kinh i » kinh phi, kinh hai, kinh tri
cua tu » cua tuc, cua su, cua cu
nuoc » quoc, duoc, ngoc

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 dat nuoc va ((kinh di) or (kinh i)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. lieu va dat nuoc va ((kinh di) OR (kinh i)) cua tu.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. lieu va dat nuoc va ((kinh di) or (kinh i)) cua tu*.