Perhaps you should try some spelling variations:
tranh quan » tranh quang, trinh quan, tranh luan
lieu tinh » trieu tinh, diep tinh, bien tinh
tong cong » trong cong, cong cong, dang cong
dung cong » dung trong
doi lieu » duoc lieu, doi chieu, du lieu
toan cao » toan ban
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi lieu tinh - canh tranh quan ((tong cong) or (dung cong)) vinh ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi lieu tinh - canh tranh quan ((tong cong) OR (dung cong)) vinh ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doi lieu tinh - canh tranh quan ((tong cong) or (dung cong)) vinh ((toan cao) or (toan tap))*.