Perhaps you should try some spelling variations:
hoc thiet » hoc thieu, hoc thuyet, hoc hien
thiet anh » thien anh, thuyet anh, thien danh
hanh sinh » hanh dinh, hinh sinh, hanh chinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua nhung » va nhung
thanh lap » thanh san, phan lap, thanh hai
cong dan » cong tan, huong dan, cong dong
cong san » cong tac

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 anh - ((hanh sinh) OR (hanh tinh)) cua nhung ((cong dan) or (cong san)) thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet anh - ((hanh sinh) OR (hanh tinh)) cua nhung ((cong dan) OR (cong san)) thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet anh - ((hanh sinh) OR (hanh tinh)) cua nhung ((cong dan) or (cong san)) thanh lap".
• Adding a wildcard symbol may retrieve word variants: hoc thiet anh - ((hanh sinh) OR (hanh tinh)) cua nhung ((cong dan) or (cong san)) thanh lap*.