Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
gian dan » gian lang
tu sach » thu sach, su sach, te sach
duc ban » duc tan, duc van, dua ban
ty tang » tay tang, ty xang, ty hang
tang ma » mang may, tang van
sach ty » sach y, sach tu, sach thu
xuc ban » cuc ban, quoc ban, xuat ban
vi cua » vai cua, di cua
ma hoi » mai hoi, xa hoi, ma hoa

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 ty tang ma hoi. hieu ((gian dan) or (vien bach)) ((xuc ban) OR (duc ban)) thanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty tang ma hoi. hieu ((gian dan) OR (vien bach)) ((xuc ban) OR (duc ban)) thanh vi cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty tang ma hoi. hieu ((gian dan) or (vien bach)) ((xuc ban) OR (duc ban)) thanh vi cua vat*".