Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
vu sach » vu bach, su sach, vu khach
xuc van » duc van, luc van, vuc van
van cam » van nam, van lam, van cau
tang ma » mang may, tang van
sang ma » nang ma, sang tao, mang may
vi cua » vai cua, di 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: ((vu sach) or (thuoc sach)) ky ((sang ma) OR (tang ma)) hoi. hieu van cam xuc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (thuoc sach)) ky ((sang ma) OR (tang ma)) hoi. hieu van cam xuc van hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (thuoc sach)) ky ((sang ma) OR (tang ma)) hoi. hieu van cam xuc van hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (thuoc sach)) ky ((sang ma) OR (tang ma)) hoi. hieu van cam xuc van hanh vi cua te*.