Perhaps you should try some spelling variations:
hoc chinh » hoan chinh, hoc sinh, hoc kinh
canh sinh » canh binh, tinh sinh, dang sinh
canh tinh » hanh tinh, manh tinh, canh tranh
dung cong » dung trong
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, huong dan
chan cau » can cau, chinh cau, nhanh cau
phan cau » phan dau, phan cac, phan tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chinh sach - ((canh sinh) or (canh tinh)) vat dung cong dan ((chan cau) OR (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - ((canh sinh) OR (canh tinh)) vat dung cong dan ((chan cau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chinh sach - ((canh sinh) or (canh tinh)) vat dung cong dan ((chan cau) OR (phan cau))".
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - ((canh sinh) or (canh tinh)) vat dung cong dan ((chan cau) OR (phan cau))*.