Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vu khanh » vu thanh, van khanh, duy khanh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu te » hieu ve, hien te, hieu he
va hanh » van hanh, va thanh, va danh
hanh de » hanh ve, hanh kem
de cua » le cua, te cua, dieu cua

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 khanh)) ky nang xa hoi. hieu te hoc (nuoc or duoc) va hanh de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu khanh)) ky nang xa hoi. hieu te hoc (nuoc OR duoc) va hanh de cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu khanh)) ky nang xa hoi. hieu te hoc (nuoc or duoc) va hanh de cua triet*.