Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
trinh quan » tinh quang, trinh luat, trinh han
doi chieu » doc hieu, doi chi, mot chieu
trinh van » trinh han, trinh toan, dinh van
tuong dan » huong dan, tung dan, xuong dan
ho chieu » theo chieu, hoc thieu, mot chieu
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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) OR (doi chieu)) tinh - hanh ((trinh van) or (trinh quan)) nhung tuong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) tinh - hanh ((trinh van) OR (trinh quan)) nhung tuong dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) tinh - hanh ((trinh van) or (trinh quan)) nhung tuong dan than cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) tinh - hanh ((trinh van) or (trinh quan)) nhung tuong dan than cau*.