Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
tran van » luan van
cong tao » cong tac, cong tan, cong bao
tao cao » bao cao, toan cao
cao cap » cao chat

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 sach - hanh ((tran quang) or (tran van)) nhung cong tao cao cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((tran quang) OR (tran van)) nhung cong tao cao cap*.