Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van anh
lang hoa » hang hoa, lang ha, nang hoa
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
thu van » thuc van, thuy van, tu van
sach ky » sac ky, sach y, sach ty
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky lang » ky nang, ky dang, ky tang
le nam » he nam, le na, te nam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang hoa hoi. hieu ((le nam) or (ly nam)) thu van hanh vai ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang hoa hoi. hieu ((le nam) OR (ly nam)) thu van hanh vai ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang hoa hoi. hieu ((le nam) or (ly nam)) thu van hanh vai ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang hoa hoi. hieu ((le nam) or (ly nam)) thu van hanh vai ((cua triet) OR (su triet))*.