Perhaps you should try some spelling variations:
than khai » than khoi, tuan khai, than thoai
ve triet » va trien
su triet » su viet, su tien
van than » van thanh, van thang, van tuan
nuoc van » nuoc va, nuoc san, luoc van
hieu ve » hieu va, hieu van
lang ha » long ha
sac ky » cac ky
ve dat » de dat, va dat, ve dao
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sac ky) or (sai ky)) lang ha hoi. hieu ve dat nuoc van than khai ((su triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sac ky) OR (sai ky)) lang ha hoi. hieu ve dat nuoc van than khai ((su triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: su ((sac ky) or (sai ky)) lang ha hoi. hieu ve dat nuoc van than khai ((su triet) or (ve triet))*.