Perhaps you should try some spelling variations:
cong thuong » hang thuong
thiet dang » thien dang, nhiet dong, nhiet nang
thuong ban » thuong han, thuong lan, tuong ban
hoc thiet » hoc thieu, hoc thuyet, hoc hien
hanh sinh » hanh dinh, hanh chinh, hanh trinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
hinh sinh » tinh sinh, hinh dinh, hinh kinh
ban thanh » ban hanh, ban hang
thanh lap » thanh san, phan lap, thanh hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet dang - ((((hanh sinh) OR (hanh tinh))) or (hinh sinh)) cua cong thuong ban thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet dang - ((((hanh sinh) OR (hanh tinh))) OR (hinh sinh)) cua cong thuong ban thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet dang - ((((hanh sinh) OR (hanh tinh))) or (hinh sinh)) cua cong thuong ban thanh lap".
• Adding a wildcard symbol may retrieve word variants: hoc thiet dang - ((((hanh sinh) OR (hanh tinh))) or (hinh sinh)) cua cong thuong ban thanh lap*.