Perhaps you should try some spelling variations:
trien quang » tran quang, dien quang, thien quan
tuyen quang » nguyen quang, tuyen dung, tuyen duong
thanh tung » thanh cong
cong tinh » cong vinh, long tinh, cong thanh
va thong » va thuong, va phuong, he thong
toan cao » toan ban, toan tap
tung va » trung va, tuong va, dung va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((trien quang) OR (tuyen quang)) - thanh tung va thong ((cong tinh) or (cong trinh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((trien quang) OR (tuyen quang)) - thanh tung va thong ((cong tinh) OR (cong trinh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((trien quang) OR (tuyen quang)) - thanh tung va thong ((cong tinh) or (cong trinh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((trien quang) OR (tuyen quang)) - thanh tung va thong ((cong tinh) or (cong trinh)) toan cao*.