Perhaps you should try some spelling variations:
trinh nhiet » trinh thiet, trinh nghien, trinh viet
cua manh » cua thanh, cua doanh, cua nganh
va nguoi » ca nguoi, cua nguoi, dao nguoi
nhat hoc » nha hoc, nhan hoc, nhat hoa
chat hoc » chat hoa, chat thom, cho hoc
hien han » hien hanh, hien huan, dien han
cua anh » cua banh, ca anh, sua anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: giao trinh nhiet ((cua anh) or (cua manh)) va nguoi viet ((nhat hoc) OR (chat hoc)) hien han~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao trinh nhiet ((cua anh) OR (cua manh)) va nguoi viet ((nhat hoc) OR (chat hoc)) hien han.
• The words AND, OR and NOT may confuse the search; try adding quotes: "giao trinh nhiet ((cua anh) or (cua manh)) va nguoi viet ((nhat hoc) OR (chat hoc)) hien han".
• Adding a wildcard symbol may retrieve word variants: giao trinh nhiet ((cua anh) or (cua manh)) va nguoi viet ((nhat hoc) OR (chat hoc)) hien han*.