Perhaps you should try some spelling variations:
sieu viet » su viet, dien viet, bien viet
hieu viec » nhieu viec, hieu ve, hieu hien
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
sach ky » sac ky, sach ty, sach kem
vi cua » vai cua, di cua
xu van » tu van, vu van, su van
cua xu » cua su, cua cu, cua tu
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sach y)) nang xa hoi. ((hieu viec) OR (sieu viet)) cua xu van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) nang xa hoi. ((hieu viec) OR (sieu viet)) cua xu van hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sach y)) nang xa hoi. ((hieu viec) OR (sieu viet)) cua xu van hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach y)) nang xa hoi. ((hieu viec) OR (sieu viet)) cua xu van hanh vi cua te*.