Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
luc bat » suc bat, luc nhat, luat bat
duc ban » duc tan, duc van, dua ban
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
ky danh » ky anh
ky dang » ky nang
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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 ((ky dang) OR (ky danh)) ma hoi. hieu ve chat ((duc ban) or (luc bat)) thanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky dang) OR (ky danh)) ma hoi. hieu ve chat ((duc ban) OR (luc bat)) thanh vi cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky dang) OR (ky danh)) ma hoi. hieu ve chat ((duc ban) or (luc bat)) thanh vi cua vat*".