Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
duc man » duc manh, duc mau, duc van
va cham » va chat, va tham
hieu va » lieu va, hieu qua
sang ma » nang ma, sang tao, mang may
tang ma » mang may, tang van
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: su sach y ((sang ma) or (tang ma)) hoi. hieu va cham ((duc man) or (duc tan)) thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((sang ma) OR (tang ma)) hoi. hieu va cham ((duc man) OR (duc tan)) thanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: su sach y ((sang ma) or (tang ma)) hoi. hieu va cham ((duc man) or (duc tan)) thanh vi cua te*.