Perhaps you should try some spelling variations:
dinh tri » chinh tri
vu sach » vu bach, su sach, vu khach
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
sach ky » sac ky, sach y, sach ty
xuc va » tuc va, luc va, xac va
cua te » cua tu
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai
ma hai » ta hai, va hai, xa hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky sang ma hai. hieu ((ve cam) or (ve cac)) ((xuc va) OR (duc va)) dinh tri cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky sang ma hai. hieu ((ve cam) OR (ve cac)) ((xuc va) OR (duc va)) dinh tri cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky sang ma hai. hieu ((ve cam) or (ve cac)) ((xuc va) OR (duc va)) dinh tri cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ky sang ma hai. hieu ((ve cam) or (ve cac)) ((xuc va) OR (duc va)) dinh tri cua te*.