Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang cua » mang cua, hang ca, huong cua
cua cua » cua chua, ca cua, qua cua
hieu ve » hieu va, hieu van
vu sach » su sach, vu khach
nang xa » nang x, lang xa, nang ma
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va
loc va » hoc va
y nang » ky nang, ly nang, v nang

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