Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
luat quang » luat quan, xuat quang, dat quang
chat quang » chat luong, pham quang
khi sinh » ki sinh, thi sinh, khoe sinh
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tap, toan tai
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: doi khi sinh - hanh trinh ((luat quang) or (chat quang)) cong dan ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi khi sinh - hanh trinh ((luat quang) OR (chat quang)) cong dan ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi khi sinh - hanh trinh ((luat quang) or (chat quang)) cong dan ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: doi khi sinh - hanh trinh ((luat quang) or (chat quang)) cong dan ((toan cau) OR (toan cao))*.