Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
thanh do » thanh de, thanh pho, thanh hoa
truc van » truc va, thuc van, truc ban
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
tu ban » thu ban, te ban
te lai » te tai, te bai
te sai » te tai, te bai, te hai
do su » do sut, do tu, co su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sai) OR (te lai)) ky nang xa hoi. hieu ve cham ((tu ban) or (truc van)) thanh do su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sai) OR (te lai)) ky nang xa hoi. hieu ve cham ((tu ban) OR (truc van)) thanh do su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sai) OR (te lai)) ky nang xa hoi. hieu ve cham ((tu ban) or (truc van)) thanh do su triet".
• Adding a wildcard symbol may retrieve word variants: ((te sai) OR (te lai)) ky nang xa hoi. hieu ve cham ((tu ban) or (truc van)) thanh do su triet*.