Perhaps you should try some spelling variations:
vien cach » vien bach, vien cac, vien canh
hieu vien » hieu hien, hieu viec, thieu nien
doanh va » doan va, doanh tai, doanh cua
cach bao » cach nao, sach bao, cach giao
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, su sach, vu khach
danh va » hanh va, anh va, dan va
tu sach » thu sach, su sach, te sach
bao va » bao ve, tao va, ban va

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) or (vu sach)) ky nang xa hoi. hieu vien cach bao va ((danh va) OR (doanh va)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu sach)) ky nang xa hoi. hieu vien cach bao va ((danh va) OR (doanh va)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (vu sach)) ky nang xa hoi. hieu vien cach bao va ((danh va) OR (doanh va)) su triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu sach)) ky nang xa hoi. hieu vien cach bao va ((danh va) OR (doanh va)) su triet*.