Perhaps you should try some spelling variations:
thong phan » thong quan, chong phap, thong van
chieu sach » chinh sach, chiet tach, chieu sang
lua thong » luat thong, luat thuong, suat thong
phan phan » phap phan, phan phat, than phan
hoa chat » hop chat, hoa phan
chat lua » chat cua, chat va, chat huu
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: doi ((chieu sach) or (cuu tinh)) - hoa chat lua thong thong phan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (cuu tinh)) - hoa chat lua thong thong phan phan lap.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (cuu tinh)) - hoa chat lua thong thong phan phan lap*.