Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, cuoc cach, cuon sach
hoc sach » hoc sinh, hoc cac, hoc anh
cong tac » cong ty
van hanh » van thanh, ban hanh, van anh
vai cua » dai cua, hai cua, lai cua
va dinh » van dinh, va kinh, va tinh
hieu va » lieu va, hieu qua
tac hoi » tao hoi, tay hoi, tac hai
ly cong » li cong, ky cong, le cong
va cam » va cham, va cac, va cao
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: ((nuoc sach) or (hoc sach)) ly cong tac hoi. hieu va cam xuc ((van hanh) or (va dinh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nuoc sach) OR (hoc sach)) ly cong tac hoi. hieu va cam xuc ((van hanh) OR (va dinh)) vai cua te.
• Adding a wildcard symbol may retrieve word variants: ((nuoc sach) or (hoc sach)) ly cong tac hoi. hieu va cam xuc ((van hanh) or (va dinh)) vai cua te*.