Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
thanh vi » thanh va, thanh ve, nhanh vi
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
cam tu » cam thu, nam tu, dam tu

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 y nang xa hoi. hieu ve cam tu va ((thanh vi) OR (hanh vi)) ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ve cam tu va ((thanh vi) OR (hanh vi)) ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu ve cam tu va ((thanh vi) OR (hanh vi)) ((cua triet) or (va triet))".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu ve cam tu va ((thanh vi) OR (hanh vi)) ((cua triet) or (va triet))*.