Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
hieu quang » thieu quang, hieu quan, hieu qua
nhieu tang » chieu sang, hieu lang, nhiet nang
chinh chua » chinh cua, chinh cho, chinh phu
chua nhung » cua nhung, thuat nhung, cua chung
chong dan » cong dan, thong dan, chong gian
than cau » phan cau, than cap, thanh chau
toan cau » 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: ho ((hieu quang) or (nhieu tang)) - hanh chinh chua nhung chong dan ((than cau) OR (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu quang) OR (nhieu tang)) - hanh chinh chua nhung chong dan ((than cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu quang) or (nhieu tang)) - hanh chinh chua nhung chong dan ((than cau) OR (toan cau))".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu quang) or (nhieu tang)) - hanh chinh chua nhung chong dan ((than cau) OR (toan cau))*.