Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
minh vai » minh va, minh hai, minh ai
hieu van » hieu va, thien van, lieu va
sach ky » sach y, sach ty, sach kem
hieu ve » hieu va
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
dam tu » nam tu, cam tu, tam tu
tu van » tu va
vai su » va su, van su, lai su

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ky) or (sac ky)) nang xa hoi. ((hieu ve) OR (hieu van)) dam tu van minh vai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sac ky)) nang xa hoi. ((hieu ve) OR (hieu van)) dam tu van minh vai su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) or (sac ky)) nang xa hoi. ((hieu ve) OR (hieu van)) dam tu van minh vai su triet*".