Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
hieu vien » hieu hien, hieu viec, thieu nien
va triet » va thiet, va trien, ve triet
danh hai » dang hai, lanh hai, manh hai
vien dai » hien dai
nang xa » nang x, lang xa, nang ma
dai ban » dai han, tai ban, di ban
va danh » va dinh, va dan, va hanh
vu sach » vu bach, su sach, vu khach
tu sach » thu sach, su sach, te sach

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 dai ban va danh hai ((cua triet) OR (va 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 dai ban va danh hai ((cua triet) OR (va 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 dai ban va danh hai ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu sach)) ky nang xa hoi. hieu vien dai ban va danh hai ((cua triet) OR (va triet))*.