Perhaps you should try some spelling variations:
thieu nien » thien nhien
cua triet » cua viet, su triet, va triet
hieu viec » nhieu viec, hieu ve, sieu viet
hanh ca » hanh cac, hanh cat, hanh cua
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
luc va » duc va, tuc va
loc va » hoc va
ca cua » co 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. ((thieu nien) or (hieu viec)) cac ((luc va) or (loc va)) hanh ca cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. ((thieu nien) OR (hieu viec)) cac ((luc va) OR (loc va)) hanh ca cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. ((thieu nien) or (hieu viec)) cac ((luc va) or (loc va)) hanh ca cua triet*.