Perhaps you should try some spelling variations:
thien hien » thien nhien, thien chien, thien hieu
hien cac » thien cac, vien cac, hieu cac
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
su triet » su viet, ve triet
hanh van » thanh van, khanh van, hanh va
va hanh » van hanh, va thanh, va danh
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
su tien » su kien, su hien, tu tieng
sac ky » cac ky, sai ky

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) OR (sac ky)) nang xa hoi. thien hien cac nuoc va hanh van ((su triet) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) nang xa hoi. thien hien cac nuoc va hanh van ((su triet) OR (su tien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sac ky)) nang xa hoi. thien hien cac nuoc va hanh van ((su triet) or (su tien))".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sac ky)) nang xa hoi. thien hien cac nuoc va hanh van ((su triet) or (su tien))*.