Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, hoc dieu, hoc thiet
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
canh ban » can ban, canh dan, canh van
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((hoc chieu) OR (ho chieu))) or (hoc hien)) sang - canh ban cua nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((hoc chieu) OR (ho chieu))) OR (hoc hien)) sang - canh ban cua nhung cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((hoc chieu) OR (ho chieu))) or (hoc hien)) sang - canh ban cua nhung cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ((((hoc chieu) OR (ho chieu))) or (hoc hien)) sang - canh ban cua nhung cong tac toan cau*.