Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vai » thanh hai, thanh van, thanh tai
van thanh » ban thanh, van tuan
thu sach » thuat sach, thuoc sach, thu hoach
vai cua » dai cua, hai cua, lai cua
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
ve cac » va cac, vien cac
do van » dao van, vo van, so van

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) OR (thu sach)) ky nang xa hoi. hieu ((he bac) or (ve cac)) do van thanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu ((he bac) OR (ve cac)) do van thanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky nang xa hoi. hieu ((he bac) or (ve cac)) do van thanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu ((he bac) or (ve cac)) do van thanh vai cua triet*.