Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
hieu manh » chieu xanh, hieu nganh, dieu hanh
manh hung » anh huong
chong van » thong van, hong van, chong va
phong van » phung van, thong van, phong va
thong cau » thong cac, thong cap, thong tu
hung va » huong va, hung van, hang va

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