Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
nam xua » nam cua, nam qua, nam luat
nam mua » nam cua, nam qua, nam luat
sach ky » sac ky, sach y, sach ty
thi van » thi lan, thi hanh, thi nang
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
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: tu sach ky dang xay hoi. ((thien van) or (thi van)) ((nam mua) OR (nam xua)) van thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang xay hoi. ((thien van) OR (thi van)) ((nam mua) OR (nam xua)) van thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky dang xay hoi. ((thien van) or (thi van)) ((nam mua) OR (nam xua)) van thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang xay hoi. ((thien van) or (thi van)) ((nam mua) OR (nam xua)) van thanh vi cua te*.