Perhaps you should try some spelling variations:
thien anh » thien danh, tien anh, thien thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hang nong » thang long, han tong
phan cac » nhan cach, phan dau, phan lap
nong dan » cong dan, nong san, nguong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
han cac » hang cac, hanh cac, dan cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien anh) or (hieu manh)) - hanh ((han cac) OR (phan cac)) hang nong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (hieu manh)) - hanh ((han cac) OR (phan cac)) hang nong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien anh) or (hieu manh)) - hanh ((han cac) OR (phan cac)) hang nong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (hieu manh)) - hanh ((han cac) OR (phan cac)) hang nong dan toan cau*.