Perhaps you should try some spelling variations:
dinh vai » dinh van, dinh vi, dinh va
te sach » toc sach
sach ky » sac ky, sach y, sach ty
xay hoi » xa hoi, tay hoi, cay phoi
van cam » van nam, van cau, van dam
van lam » van nam
va dinh » van dinh, va kinh, va tinh
ky van » ly van, ty van, ky va
xuc va » duc va, tuc va, luc va
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: te sach ky van xay hoi. thien ((van cam) OR (van lam)) xuc va dinh vai ((va thiet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky van xay hoi. thien ((van cam) OR (van lam)) xuc va dinh vai ((va thiet) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky van xay hoi. thien ((van cam) OR (van lam)) xuc va dinh vai ((va thiet) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach ky van xay hoi. thien ((van cam) OR (van lam)) xuc va dinh vai ((va thiet) or (cua te))*.