Perhaps you should try some spelling variations:
trang luan » tranh luan, trang tuan, truong luan
thong cong » trong cong, tong cong, thong thong
tieu sang » chieu sang, tieu dung, tinh sang
tiem nang » tin nang, tich nang
tang luan » dung luan
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: theo ((tieu sang) or (tiem nang)) - hanh ((trang luan) OR (tang luan)) thong cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sang) OR (tiem nang)) - hanh ((trang luan) OR (tang luan)) thong cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu sang) or (tiem nang)) - hanh ((trang luan) OR (tang luan)) thong cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sang) or (tiem nang)) - hanh ((trang luan) OR (tang luan)) thong cong tan toan cao*.