Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hanh lam » thanh lap, hanh kem, hanh va
hieu va » hieu qua
va hanh » van hanh, va thanh, va danh
cam luc » cam xuc, cau luc
sach tu » sach thu, cach tu, sach ty
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
tu nang » tru nang, tu nong, tu nano
luc va » duc va, tuc va, loc va
lam va » nam va, dam va, lam ha

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