Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
thanh di » thanh doi, thanh de, thanh do
thuc day » thuc dan, thuc vat
thuc va » thuc vat, thuc dan
thu xac » thau xay
thu sac » thu sach, thu san, thu dac
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sac) OR (thu xac)) ky nang x hoi. hieu van nam ((thuc va) or (thuc day)) thanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sac) OR (thu xac)) ky nang x hoi. hieu van nam ((thuc va) OR (thuc day)) thanh di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sac) OR (thu xac)) ky nang x hoi. hieu van nam ((thuc va) or (thuc day)) thanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: ((thu sac) OR (thu xac)) ky nang x hoi. hieu van nam ((thuc va) or (thuc day)) thanh di cua triet*.