Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
phuong dan » phuong danh, phuong doan, huong dan
canh sinh » canh tinh, canh binh, tinh sinh
vap nhung » va nhung, voi nhung, cam nhung
ho chieu » theo chieu, hoc thieu, doi chieu
ve nhung » va nhung, tu nhung
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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 - canh sinh ((ve nhung) or (vap nhung)) phuong dan ((phan cau) OR (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - canh sinh ((ve nhung) OR (vap nhung)) phuong dan ((phan cau) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - canh sinh ((ve nhung) or (vap nhung)) phuong dan ((phan cau) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - canh sinh ((ve nhung) or (vap nhung)) phuong dan ((phan cau) OR (phan dau))*.