Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
cham duc » pham duc, cham soc, pham duy
thu sach » thuat sach, thuoc sach, thu hoach
dang cay » dang xay, dang ca, dang cac
cay phoi » cap phoi, tay hoi, cay cho
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
tu sach » su sach, te sach, tu cach
va cham » va chat, va tham
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua

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 (thu sach)) ky dang cay phoi. hieu va cham duc va dinh vi ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky dang cay phoi. hieu va cham duc va dinh vi ((cua triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky dang cay phoi. hieu va cham duc va dinh vi ((cua triet) or (cua viet))*.