Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac tuc » cac toc, cac tu, cac tac
tuc van » thuc van, truc van, tuc va
sach ky » sac ky, sach y, sach ty
hanh di » hanh de, danh di, xanh di
hang di » hang doi, hang vi, hang dien
su sach » so sach, vu sach
ve cac » va cac, vien cac

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 nang xa hoi. hieu ve cac tuc van ((((hanh di) OR (hanh vi))) or (hang di)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu ve cac tuc van ((((hanh di) OR (hanh vi))) OR (hang di)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu ve cac tuc van ((((hanh di) OR (hanh vi))) or (hang di)) cua triet*".