Perhaps you should try some spelling variations:
danh sai » dung sai, danh dau, hanh san
dang xay » dang van, van xay
su triet » su viet, su tien, ve triet
danh bat » doanh bat, anh bai, dinh ba
cac truc » cau truc, cac tru, cac trung
te sach » toc sach
sach ky » sac ky, sach y, sach ty
truc va » thuc va, thuc vat, trung va
qua cac » cua cac
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
cua te » cua tu

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 qua cac truc va ((danh sai) or (danh bat)) ((su triet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang xay hoi. hieu qua cac truc va ((danh sai) OR (danh bat)) ((su triet) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xay hoi. hieu qua cac truc va ((danh sai) or (danh bat)) ((su triet) or (cua te))*.