Perhaps you should try some spelling variations:
quan trong » gian trong
hoc chieu » hoc thieu, ho chieu, hoc dieu
dung quan » dung quang, dung luan, luong quan
anh dung » anh dong, anh huong, sach dung
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan cau » nhanh cau, phan cau, nhan sau

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 (hoc hien)) sang - anh dung quan trong cong tac nhan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) sang - anh dung quan trong cong tac nhan cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc hien)) sang - anh dung quan trong cong tac nhan cau*.