Perhaps you should try some spelling variations:
chat thuc » thuat thuc, nhan thuc, chat thai
cua viet » ca viet, hoa viet, cua vat
van chat » cao chat
va triet » va thiet, va trien, ve triet
dan hanh » dang hanh, dan khanh, dan thanh
thuc dan » thuc hanh, hoc dan, thuc vat
hieu van » hieu va, thien van, lieu va
tu nano » truc nano
su sach » so sach, vu sach
nano 1 » nano o
1 ho » x ho, 1 ha, 1 h

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((cuu dac) or (su sach)) tu nano 1 ho. hieu van chat thuc dan hanh vi ((va triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((cuu dac) OR (su sach)) tu nano 1 ho. hieu van chat thuc dan hanh vi ((va triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: ((cuu dac) or (su sach)) tu nano 1 ho. hieu van chat thuc dan hanh vi ((va triet) or (cua viet))*.