Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
trinh luan » trinh luat, trinh quan, trinh han
dinh luong » dinh duong, dinh huong, dinh cuong
hoc chieu » hoc thieu, hoc hien, hoc dieu
luan dinh » xuan dinh, luan kinh, luan danh
luong dan » huong dan, luong dao, luong van
ho chieu » theo chieu, hoc thieu, doi chieu
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) OR (ho chieu)) tinh - canh trinh luan dinh luong dan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (ho chieu)) tinh - canh trinh luan dinh luong dan ((toan tai) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (ho chieu)) tinh - canh trinh luan dinh luong dan ((toan tai) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (ho chieu)) tinh - canh trinh luan dinh luong dan ((toan tai) or (toan cao))*.