Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ky lang » ky dang, ky tang, tay lang
hieu va » lieu va, hieu qua
va cham » va chat, va tham
hanh di » hanh vi, hanh de, hang di
ve cac » va cac, vien cac
ha hoi » hoa hoi, ha noi, xa hoi
soc va » loc va, doc va, goc va
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ve cac ((ky lang) or (ky nang)) ha hoi. hieu va cham ((soc va) OR (hoc va)) hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ve cac ((ky lang) OR (ky nang)) ha hoi. hieu va cham ((soc va) OR (hoc va)) hanh di cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ve cac ((ky lang) or (ky nang)) ha hoi. hieu va cham ((soc va) OR (hoc va)) hanh di cua triet*".