Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh dung » thanh dung, anh dung, hanh dong
dung cong » dung trong
cong tang » cong thang, cong tan, cong lang
thanh lap » thanh san, thanh hai, thanh van
dung cao » duong cao, dung cho, dung co
cao dung » cao dang, cao dong, cao ung
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (trieu tinh)) - hanh dung cao dung cong tang ((thanh lap) OR (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (trieu tinh)) - hanh dung cao dung cong tang ((thanh lap) OR (phan lap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (trieu tinh)) - hanh dung cao dung cong tang ((thanh lap) OR (phan lap))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (trieu tinh)) - hanh dung cao dung cong tang ((thanh lap) OR (phan lap))*.