Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hang tai » hang va, dung tai
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, han tai, hinh tai
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
te sac » te sach, te cac, te san
lo van » le van, vo van, so van
sac ky » cac ky, sai ky
cac lo » cac lop, cac co, cac bo

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) OR (hieu van)) cac lo van ((hanh tai) or (hang tai)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang xa hoi. ((hieu ve) OR (hieu van)) cac lo van ((hanh tai) OR (hang tai)) cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang xa hoi. ((hieu ve) OR (hieu van)) cac lo van ((hanh tai) or (hang tai)) cua viet".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang xa hoi. ((hieu ve) OR (hieu van)) cac lo van ((hanh tai) or (hang tai)) cua viet*.