Perhaps you should try some spelling variations:
thanh trung » thanh tung
tuong huong » truong huong, tuong duong, thong huong
thieu manh » tien manh, trieu minh, chieu xanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung doi » trung dai, trong doi, trung do
doi tuong » moi truong, doi song
dan van » dang van, doan van, dao van

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 manh) or (hieu manh)) - thanh trung doi tuong huong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu manh) OR (hieu manh)) - thanh trung doi tuong huong dan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu manh) or (hieu manh)) - thanh trung doi tuong huong dan van ban*.