Perhaps you should try some spelling variations:
thien van » thi van
cua triet » su triet, va triet
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
cua viet » ca viet, hoa viet, cua vat
mai hoi » mai khoi, dai hoi, lai hoi
van cam » van nam, van lam, van cau
tu sach » thu sach, su sach, te sach
y nang » ky nang, ly nang, v nang
cam tu » cam thu, nam tu, dam tu
ma hoi » xa hoi, ma hoa, me hoi

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 y nang ((ma hoi) OR (mai hoi)). thien van cam tu va thanh vi ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((ma hoi) OR (mai hoi)). thien van cam tu va thanh vi ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ((ma hoi) OR (mai hoi)). thien van cam tu va thanh vi ((cua triet) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((ma hoi) OR (mai hoi)). thien van cam tu va thanh vi ((cua triet) or (cua viet))*.