Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
cong cong » cong dong, trong cong, dung cong
cong dan » cong san, cong tan, huong dan
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: hoc thieu quang - ((thanh trung) or (thanh tung)) cua cong cong dan ((than cau) OR (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu quang - ((thanh trung) OR (thanh tung)) cua cong cong dan ((than cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu quang - ((thanh trung) or (thanh tung)) cua cong cong dan ((than cau) OR (toan cau))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - ((thanh trung) or (thanh tung)) cua cong cong dan ((than cau) OR (toan cau))*.