Perhaps you should try some spelling variations:
thieu bien » thieu nien, tieu bieu, hien bien
cua triet » cua viet, su triet, va triet
bien chat » bien phap, ban chat, bien che
nang xa » nang x, lang xa, nang ma
sach ky » sach y, sach ty, sach kem
han tai » hang tai, nhan tai, van tai
tai cua » thai cua, tai cuc, tri cua
sac ky » cac ky, sai ky
tuc va » thuc va, truc va, duc va

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. thieu bien chat ((tuc va) OR (tuc xa)) han tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) nang xa hoi. thieu bien chat ((tuc va) OR (tuc xa)) han tai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sac ky)) nang xa hoi. thieu bien chat ((tuc va) OR (tuc xa)) han tai cua triet".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sac ky)) nang xa hoi. thieu bien chat ((tuc va) OR (tuc xa)) han tai cua triet*.