Perhaps you should try some spelling variations:
nhanh thanh » phan thanh, nhanh tinh
theo chieu » theo tieu, ho chieu, theo chu
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh thang » nhanh thang, thanh thang, hanh trang
cac phuong » cac truong
cong tac » cong ty
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: theo chieu tinh - ((hanh thang) or (nhanh thanh)) cac phuong ((cong san) or (cong tac)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu tinh - ((hanh thang) OR (nhanh thanh)) cac phuong ((cong san) OR (cong tac)) toan tap.
• Adding a wildcard symbol may retrieve word variants: theo chieu tinh - ((hanh thang) or (nhanh thanh)) cac phuong ((cong san) or (cong tac)) toan tap*.