Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
thong cong » trong cong, tong cong, thong thong
hoa thiet » hoc thiet, toan thiet, hoa viet
mat thong » suat thong, xuat thong, mang thong
nong san » cong san, dong san, trong san
nong dan » cong dan, nguong dan, huong dan
tran van » luan van
tan san » tai san, tan van, han san

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoa thiet tach - ((nong san) OR (nong dan)) mat thong cong ((tan san) or (tran van)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoa thiet tach - ((nong san) OR (nong dan)) mat thong cong ((tan san) OR (tran van)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoa thiet tach - ((nong san) OR (nong dan)) mat thong cong ((tan san) or (tran van)) cau".
• Adding a wildcard symbol may retrieve word variants: hoa thiet tach - ((nong san) OR (nong dan)) mat thong cong ((tan san) or (tran van)) cau*.