Perhaps you should try some spelling variations:
thanh trung » thanh tung
luong quang » luong quan, dung quang
quang toan » quang tuan, quang tran, quang doan
hoc thieu » toc thieu, hoc hien
pho thong » he thong
doc hieu » toc thieu, hoc hien
va thong » va thuong, va phuong, he thong
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: ((doc hieu) or (hoc thieu)) sang - thanh trung ((va thong) or (pho thong)) luong quang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) sang - thanh trung ((va thong) OR (pho thong)) luong quang toan cao.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc thieu)) sang - thanh trung ((va thong) or (pho thong)) luong quang toan cao*.