Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuy van » thuy san, thuc van, thuy anh
tuan de » tuan le, luan de, toan de
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
chu van » cuu van, chu han
de cua » le cua, te cua, dieu cua
su sac » su sach, su cac
su xac » pu xac, su cac
ve nam » he nam, va nam, le nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sac) OR (su xac)) ky nang xa hoi. hieu ve nam ((thuy van) or (chu van)) tuan de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su xac)) ky nang xa hoi. hieu ve nam ((thuy van) OR (chu van)) tuan de cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su xac)) ky nang xa hoi. hieu ve nam ((thuy van) or (chu van)) tuan de cua triet*".