Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach ty » sach y, sach tu, sach thu
hanh di » hanh de, hang di, danh di
cam tuc » cam xuc, cam tu, nam thuc
bo sach » co sach, hoc sach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach ty nang xa hoi. ((hieu ve) or (hieu qua)) cam tuc va ((hanh di) or (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ty nang xa hoi. ((hieu ve) OR (hieu qua)) cam tuc va ((hanh di) OR (hanh vi)) cua triet.
• Adding a wildcard symbol may retrieve word variants: bo sach ty nang xa hoi. ((hieu ve) or (hieu qua)) cam tuc va ((hanh di) or (hanh vi)) cua triet*.