Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
thieu xanh » chieu xanh, thien anh, thien danh
van thuong » van chuong, van phuong, van truong
hieu manh » chieu xanh, hieu nganh, dieu hanh
luong dan » huong dan, luong dao, luong van
dan phan » doan phan, dan chan, van phan

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 xanh) or (hieu manh)) - thanh trong ((van thuong) OR (va thuong)) luong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - thanh trong ((van thuong) OR (va thuong)) luong dan phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (hieu manh)) - thanh trong ((van thuong) OR (va thuong)) luong dan phan tu".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - thanh trong ((van thuong) OR (va thuong)) luong dan phan tu*.