Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
pham thu » pham thuc, pham thi, pham tu
su hien » su kien, su tien, thu hien
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
va dat » va dao, va dau, va dai
va dap » va dao, va dau
te sac » te sach, te cac, te san
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang xa hoi. hieu ve ((pham thu) or (nham thuc)) ((va dat) or (va dap)) vi su hien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang xa hoi. hieu ve ((pham thu) OR (nham thuc)) ((va dat) OR (va dap)) vi su hien.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang xa hoi. hieu ve ((pham thu) or (nham thuc)) ((va dat) or (va dap)) vi su hien*.