Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhieu tang » chieu sang, hieu lang, nhiet nang
trinh quan » tinh quang, trinh luat, trinh han
dong thong » thong thong, nong thon, dong thanh
trinh cua » tinh cua, trinh luat, trinh luan
thong dan » thong van, tuong dan, thong den
dan toan » van toan, dan than, manh toan
toan cau » 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: nhu ((chieu sach) or (nhieu tang)) - hanh ((trinh cua) OR (trinh quan)) dong thong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nhu ((chieu sach) OR (nhieu tang)) - hanh ((trinh cua) OR (trinh quan)) dong thong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nhu ((chieu sach) or (nhieu tang)) - hanh ((trinh cua) OR (trinh quan)) dong thong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: nhu ((chieu sach) or (nhieu tang)) - hanh ((trinh cua) OR (trinh quan)) dong thong dan toan cau*.