Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
va triet » va thiet, va trien, ve triet
va thanh » gia thanh, ban thanh, va tinh
cam luc » cam xuc, cau luc
hieu ve » hieu va, hieu van
su sach » vu sach
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
so sach » so sanh, bo sach, co sach
luc va » duc va, tuc va, loc va
dai va » mai va

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