Perhaps you should try some spelling variations:
xanh hanh » danh thanh, ban hanh, van hanh
cam thuc » am thuc, cam thu, can thuc
nam thuc » nam thuoc, am thuc, nam thu
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky lang xa hoi. hieu ve ((cam thuc) OR (nam thuc)) xanh hanh ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky lang xa hoi. hieu ve ((cam thuc) OR (nam thuc)) xanh hanh ((vi cua) OR (di cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky lang xa hoi. hieu ve ((cam thuc) OR (nam thuc)) xanh hanh ((vi cua) or (di cua)) tre*".