Perhaps you should try some spelling variations:
cong nguong » cong nguon, cong thuong, cong luong
tieu quang » thieu quang, hieu quang, tien quang
nguong dan » huong dan
chinh cua » chinh ca, chinh sua, hinh cua
hoc tieu » hoc thieu, hoc dieu, hoc sieu
toan cau » toan cao, toan ban, toan tai
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 tieu quang - hanh chinh cua cong nguong dan ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tieu quang - hanh chinh cua cong nguong dan ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc tieu quang - hanh chinh cua cong nguong dan ((toan cau) or (toan tap))*.