Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
tang luan » dung luan
manh cua » doanh cua, ban cua
cong van » cong vang, cong san, song van
ban cao » bao cao, ban can, ban co

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 (thien anh)) - hanh ((tang luan) or (manh cua)) thong cong van ban cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - hanh ((tang luan) OR (manh cua)) thong cong van ban cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (thien anh)) - hanh ((tang luan) or (manh cua)) thong cong van ban cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (thien anh)) - hanh ((tang luan) or (manh cua)) thong cong van ban cao*.