Perhaps you should try some spelling variations:
thuoc dang » thuoc dung, thuoc khang, thuc dan
thuc dang » thuc dan, thuc dung, thu dang
cua triet » cua viet, su triet, va triet
te sach » toc sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va cham » va chat, va tham
sinh vi » sinh li, sinh va, dinh vi
y lang » o lang, _ lang, tay lang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y lang xa hoi. hieu va cham ((thuc dang) or (thuoc dang)) sinh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang xa hoi. hieu va cham ((thuc dang) OR (thuoc dang)) sinh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach y lang xa hoi. hieu va cham ((thuc dang) or (thuoc dang)) sinh vi cua triet*.