Perhaps you should try some spelling variations:
chieu tinh » lieu tinh, chau tinh, kieu tinh
trinh cong » trinh dung
cong luong » cong thuong, nang luong, cong dong
luong dung » cuong dung, duong dung, vuong dung
dung cong » dung trong
cong bai » cuong bai, cong hai, cung bai
bai toan » bai tap
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: hoc ((chieu tinh) or (trieu tinh)) - trinh cong luong dung cong bai toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (trieu tinh)) - trinh cong luong dung cong bai toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (trieu tinh)) - trinh cong luong dung cong bai toan ban*.