Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh doi » thanh loi, thanh moi, thanh do
doi cua » dai cua, hoi cua, dong cua
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. ((hieu ve) or (lieu va)) cau ((luc va) OR (tuc va)) thanh doi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. ((hieu ve) OR (lieu va)) cau ((luc va) OR (tuc va)) thanh doi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. ((hieu ve) or (lieu va)) cau ((luc va) OR (tuc va)) thanh doi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. ((hieu ve) or (lieu va)) cau ((luc va) OR (tuc va)) thanh doi cua triet*.