Perhaps you should try some spelling variations:
thoi hanh » thi hanh, troi hanh, tuoi thanh
tranh cua » doanh cua, manh cua
cua trong » cua truong, cua trung, qua trong
doi thoi » doi thoai, moi thoi, do thoi
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
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: doi thoi hanh - canh tranh cua trong cong tap toan cau~.
• Adding a wildcard symbol may retrieve word variants: doi thoi hanh - canh tranh cua trong cong tap toan cau*.