Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
duc van » duc tan, duc manh, duc phan
thi cua » thai cua, tri cua, thi dua
thi cuc » tai cuc
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam

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 nang xa hoi. hieu ve cam ((duc van) or (duc va)) dinh ((thi cua) OR (thi cuc)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. hieu ve cam ((duc van) OR (duc va)) dinh ((thi cua) OR (thi cuc)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. hieu ve cam ((duc van) or (duc va)) dinh ((thi cua) OR (thi cuc)) tre*".