Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
truc van » truc va, thuc van, truc ban
cam truc » cau truc, nam truc, lam truoc
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
so sach » so sanh, bo sach, co sach
hang di » hang doi, hang dien, hang dich
hang vi » hang va, hanh vi, khang voi
su sach » vu sach
y nang » ky nang, ly nang, v nang
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 sach) OR (so sach)) y nang xa hoi. hieu ve cam truc van ((hang di) or (hang vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y nang xa hoi. hieu ve cam truc van ((hang di) OR (hang vi)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) y nang xa hoi. hieu ve cam truc van ((hang di) or (hang vi)) cua triet*".