Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
hieu van » thien van, hieu ve
va thanh » gia thanh, ban thanh, va tinh
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ro » nang co, nang ho, nang ra
hieu va » hieu qua
chu duc » thu duc, chua duoc, cuu duoc
ro hoi » co hoi, o hoi, mo hoi
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 ky nang ro hoi. ((((hieu van) OR (hieu va))) or (lieu va)) chu duc va thanh lam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ro hoi. ((((hieu van) OR (hieu va))) OR (lieu va)) chu duc va thanh lam va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ro hoi. ((((hieu van) OR (hieu va))) or (lieu va)) chu duc va thanh lam va triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ro hoi. ((((hieu van) OR (hieu va))) or (lieu va)) chu duc va thanh lam va triet*.