Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van thanh » ban thanh, van tuan
van anh » tuan anh, van minh
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
nang o » nang co, nang ho, nang ro
vi cua » vai cua, di cua
o hoc » co hoc, mo hoc, so hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty nang o hoc. ((hieu ve) or (hieu qua)) cam xuc ((van anh) OR (van thanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang o hoc. ((hieu ve) OR (hieu qua)) cam xuc ((van anh) OR (van thanh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang o hoc. ((hieu ve) or (hieu qua)) cam xuc ((van anh) OR (van thanh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang o hoc. ((hieu ve) or (hieu qua)) cam xuc ((van anh) OR (van thanh)) vi cua triet*.