Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
su triet » su viet, su tien, ve triet
danh dai » danh dau, danh di, danh sai
vien cac » vien bach, vien dai, vien da
su sach » so sach
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
lao va » tao va, bao va, dao va
cao va » cao van, tao va, co va
dai su » dai sua, dai so, dan su

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) OR (vu sach)) ky nang xa hoi. hieu vien cac ((lao va) OR (cao va)) danh dai su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ky nang xa hoi. hieu vien cac ((lao va) OR (cao va)) danh dai su triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ky nang xa hoi. hieu vien cac ((lao va) OR (cao va)) danh dai su triet*.