Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
dinh ve » dinh ket
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang xa hoi. hieu ((ve cam) or (va cac)) luc va ((dinh ve) OR (dinh van)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu ((ve cam) OR (va cac)) luc va ((dinh ve) OR (dinh van)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu ((ve cam) or (va cac)) luc va ((dinh ve) OR (dinh van)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu ((ve cam) or (va cac)) luc va ((dinh ve) OR (dinh van)) cua triet*.