Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
nhung dung » phuong dung, ung dung, thong dung
dung sinh » duong sinh, dang sinh, dung ninh
sinh toan » tinh toan, hinh toan, minh toan
tranh va » tranh van, trang va, trinh va
toan cau » 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 chieu) or (toc thieu)) sang - canh tranh va nhung dung sinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (toc thieu)) sang - canh tranh va nhung dung sinh toan cau.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (toc thieu)) sang - canh tranh va nhung dung sinh toan cau*.