Perhaps you should try some spelling variations:
xanh hanh » danh thanh, ban hanh, van hanh
van cham » van chat, van tham, va cham
cham duc » pham duc, cham soc, pham duy
hanh lam » thanh lap, hanh kem, hanh va
duc xanh » duc anh, duc manh, duc hanh
hieu van » hieu va, thien van, lieu va
ca viet » va viet, co viet, san viet
sach ty » sach tu, sach thu, xach tay
x hoi » xa hoi, o hoi, x ho

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 ty) OR (sach y)) nang x hoi. hieu van cham duc xanh hanh lam ((ca viet) or (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) nang x hoi. hieu van cham duc xanh hanh lam ((ca viet) OR (hoa viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach y)) nang x hoi. hieu van cham duc xanh hanh lam ((ca viet) or (hoa viet))*".