Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
thien van » thi van
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van anh
va vanh » va van, va danh, va hanh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
lam xuc » cam xuc, lam duoc
van lam » van nam
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa

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 ma hoi. thien van lam xuc ((va vanh) or (van hanh)) dai ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoi. thien van lam xuc ((va vanh) OR (van hanh)) dai ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ma hoi. thien van lam xuc ((va vanh) or (van hanh)) dai ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. thien van lam xuc ((va vanh) or (van hanh)) dai ((cua triet) OR (su triet))*.