Perhaps you should try some spelling variations:
thanh tri » thanh tra, thanh tai, chinh tri
van thanh » ban thanh, van tuan
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, mang may
lam xuc » lam duoc
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: hoc sach ky ((nang ma) OR (nang cao)) hoi. hieu van ((lam xuc) or (cam xuc)) van thanh tri cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky ((nang ma) OR (nang cao)) hoi. hieu van ((lam xuc) OR (cam xuc)) van thanh tri cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ky ((nang ma) OR (nang cao)) hoi. hieu van ((lam xuc) or (cam xuc)) van thanh tri cua te".
• Adding a wildcard symbol may retrieve word variants: hoc sach ky ((nang ma) OR (nang cao)) hoi. hieu van ((lam xuc) or (cam xuc)) van thanh tri cua te*.