Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, hieu quan
trien quang » tran quang, tuyen quang, dien quang
thanh phan » thanh pho, thanh san, thanh toan
thong cong » trong cong, tong cong, thong thong
cong benh » con benh, cong binh, song benh
hanh san » thanh san, khach san, thanh son
va thong » va thuong, va phuong, he thong
nhan tai » hang tai, van tai, toan tai

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) OR (trien quang)) - ((hanh san) or (thanh phan)) va thong cong benh nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu quang) OR (trien quang)) - ((hanh san) OR (thanh phan)) va thong cong benh nhan tai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu quang) OR (trien quang)) - ((hanh san) or (thanh phan)) va thong cong benh nhan tai".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu quang) OR (trien quang)) - ((hanh san) or (thanh phan)) va thong cong benh nhan tai*.