Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
pham duy » pham duc
cham duc » pham duc, cham soc, phan duc
cu lang » cua lang, tu lang, chi lang
xu lang » tu lang, xu dang, xu quang
lai cua » dai cua, hai cua, lai chau
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 ((xu lang) or (cu lang)) xa hoi. hieu van ((cham duc) or (pham duy)) van hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((xu lang) OR (cu lang)) xa hoi. hieu van ((cham duc) OR (pham duy)) van hanh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((xu lang) or (cu lang)) xa hoi. hieu van ((cham duc) or (pham duy)) van hanh lai cua triet*.