Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
thanh va » thanh van, hanh va, thanh ha
hieu ve » hieu va, hieu van
su sach » so sach
vu sach » vu bach, vu khach
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va
loc va » hoc va
va va » va van, va vua, va vai

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