Perhaps you should try some spelling variations:
thuoc vat » thuc vat, thuoc va, thuoc bat
lam thuoc » nam thuoc, am thuc, cay thuoc
sinh cua » manh cua, dinh cuu, sinh va
vat danh » va danh, van danh, luat danh
hoa lang » hoa dan, hoa van
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
van lam » van nam
vi cuu » vi luu, vinh cuu
o lang » hoi lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((o lang) or (hoa lang)) xa hoi. hieu van lam thuoc vat danh ((vi cuu) or (sinh cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((o lang) OR (hoa lang)) xa hoi. hieu van lam thuoc vat danh ((vi cuu) OR (sinh cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((o lang) or (hoa lang)) xa hoi. hieu van lam thuoc vat danh ((vi cuu) or (sinh cua)) tre*.