Perhaps you should try some spelling variations:
su triet » su viet, su tien
dang xay » dang van, van xay
ve triet » va trien
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
dinh va » dinh van, dinh ve, tinh va
cuu tre » cua tre, cau tren, cau treo
te sach » toc sach
sach ky » sac ky, sach y, sach ty
duoc va » nuoc va, duc va, duoc ma
van lam » van nam
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
va dinh » van dinh, va kinh, va tinh

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 van lam duoc va dinh va ((cuu tre) or (((ve triet) OR (su triet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang xay hoi. hieu van lam duoc va dinh va ((cuu tre) OR (((ve triet) OR (su triet)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang xay hoi. hieu van lam duoc va dinh va ((cuu tre) or (((ve triet) OR (su triet))))".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xay hoi. hieu van lam duoc va dinh va ((cuu tre) or (((ve triet) OR (su triet))))*.