Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » hanh chinh
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
cong vang » cong lang, cong quang, cong ngang
ho chieu » theo chieu, hoc thieu, doi chieu
than tap » han tap, phan tap, than cap
toan tap » toan 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) or (canh tranh)) cua nhung cong vang ((than tap) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - ((hanh trinh) OR (canh tranh)) cua nhung cong vang ((than tap) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - ((hanh trinh) or (canh tranh)) cua nhung cong vang ((than tap) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - ((hanh trinh) or (canh tranh)) cua nhung cong vang ((than tap) OR (toan tap))*.