Perhaps you should try some spelling variations:
doanh va » doan va, doanh tai, doanh cua
dang xay » dang van, van xay
te sach » toc sach
duc van » duc tan, duc manh, duc phan
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai
va cuu » va cau, va chu, va huu

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