Perhaps you should try some spelling variations:
hanh tang » hanh trang, hanh mang, hanh tung
dung cong » dung trong
hien anh » hien hanh, thien anh, dien anh
anh tang » anh bang, anh dang, anh nang
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
than tap » han tap, phan tap, than cap
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien anh - ((hanh tang) or (anh tang)) cua dung cong dan ((than tap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien anh - ((hanh tang) OR (anh tang)) cua dung cong dan ((than tap) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc hien anh - ((hanh tang) or (anh tang)) cua dung cong dan ((than tap) or (toan tap))*.