Perhaps you should try some spelling variations:
cac khoi » cac thoi, cac khoan, cach thoi
cham duc » pham duc, cham soc, pham duy
hang cac » hang ca, hang cau, bang cac
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
tu sach » thu sach, te sach, tu cach
ky hang » ky nang, ly hang, ky dang
su sach » so sach, vu sach
di cua » dai cua, doi cua, de cua
cua te » cua tu

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 (su sach))) or (thu hoach)) ky hang cac khoi. hieu va cham duc va hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (su sach))) OR (thu hoach)) ky hang cac khoi. hieu va cham duc va hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) or (su sach))) or (thu hoach)) ky hang cac khoi. hieu va cham duc va hanh di cua te*.