Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
chat duc » chat xuc, chat doc, chet duoc
lai cua » dai cua, hai cua, lai chau
duc van » duc va, duc tan, duc manh
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
tu sach » thu sach, te sach, vu sach
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
tu cach » tu cac
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: ((((tu sach) OR (tu cach))) or (su sach)) ty nang x hoi. hieu ve chat duc van hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (tu cach))) OR (su sach)) ty nang x hoi. hieu ve chat duc van hanh lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu sach) OR (tu cach))) or (su sach)) ty nang x hoi. hieu ve chat duc van hanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) OR (tu cach))) or (su sach)) ty nang x hoi. hieu ve chat duc van hanh lai cua triet*.