Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » canh tranh, hanh chinh
trinh qua » trinh quan, trinh cua, trinh quang
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
qua dung » quang dung, su dung, qua song
cong san » cong tac
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: ho chieu tinh - hanh trinh qua dung cong san ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh trinh qua dung cong san ((toan tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh trinh qua dung cong san ((toan tap) or (toan ban))*.