Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
tang quan » nang quan, tong quan, thong quan
tang luan » dung luan
dung cong » dung trong
doi lieu » duoc lieu, doi chieu, du lieu
cong san » cong tac
than cau » toan cau, phan cau, than cap
toan ban » van 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 - hanh ((tang quan) or (tang luan)) dung cong san ((than cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi lieu tinh - hanh ((tang quan) OR (tang luan)) dung cong san ((than cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi lieu tinh - hanh ((tang quan) or (tang luan)) dung cong san ((than cau) or (toan ban))*.