Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
dang xay » dang van, van xay
tu cach » tu cac
hang di » hang doi, hang vi, hang dien
duc van » duc va, duc tan, duc manh
xuc ban » duc ban, cuc ban, quoc ban
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
ca viet » va viet, co viet, hoa viet
ve cam » ve cham, ve cac, va cam
di ca » di cau, di cua, doi ca

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thu sach)) ky dang xay hoi. hieu ve cam ((xuc ban) or (duc van)) hang di ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) ky dang xay hoi. hieu ve cam ((xuc ban) OR (duc van)) hang di ca viet.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) ky dang xay hoi. hieu ve cam ((xuc ban) or (duc van)) hang di ca viet*.