Perhaps you should try some spelling variations:
ve triet » va trien, su triet
dang xay » dang van, van xay
va triet » va thiet, va trien, cua triet
nang noi » nang doc
nang doi » nang doc, hang doi, nang dong
sach ky » sac ky, sach y, sach ty
te sach » toc sach
cac tac » cac toc, cac bac, cac dac
hieu va » lieu va, hieu qua
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
tac xa » tuc xa, tac da

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 dang xay hoi. hieu va cac tac xa ((nang doi) or (nang noi)) ((va triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang xay hoi. hieu va cac tac xa ((nang doi) OR (nang noi)) ((va triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xay hoi. hieu va cac tac xa ((nang doi) or (nang noi)) ((va triet) or (ve triet))*.