Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hien sang » hien trang, khien bang, chieu sang
luat canh » luat doanh, luat kinh, luc canh
luat anh » luat danh, luat hanh, luan anh
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap

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 sang - hanh trinh ((luat anh) or (luat canh)) ((cong dan) OR (cong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sang - hanh trinh ((luat anh) OR (luat canh)) ((cong dan) OR (cong tan)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien sang - hanh trinh ((luat anh) or (luat canh)) ((cong dan) OR (cong tan)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc hien sang - hanh trinh ((luat anh) or (luat canh)) ((cong dan) OR (cong tan)) toan cao*.