Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
ban thanh » ban hanh, ban hang
thanh ha » thanh hoa, thanh hai, nhanh ha
dang xay » dang van, van xay
cua viet » ca viet, hoa viet, cua dieu
ty dang » ty xang, ky dang, ty hang
xay hoi » xa hoi, tay hoi, cay phoi
sach ty » sach y, sach tu, sach thu
ve cham » va cham, ve chat, vu cham
xuc ban » duc ban, cuc ban, quoc ban
ve cam » ve cac, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ty dang xay hoi. hieu ((ve cam) or (ve cham)) xuc ban thanh ha ((cua viet) OR (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty dang xay hoi. hieu ((ve cam) OR (ve cham)) xuc ban thanh ha ((cua viet) OR (cua vat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ty dang xay hoi. hieu ((ve cam) or (ve cham)) xuc ban thanh ha ((cua viet) OR (cua vat))".
• Adding a wildcard symbol may retrieve word variants: thuat sach ty dang xay hoi. hieu ((ve cam) or (ve cham)) xuc ban thanh ha ((cua viet) OR (cua vat))*.