Perhaps you should try some spelling variations:
banh chi » danh cho, dinh chi, bao chi
cuu tre » cua tre, cau tren, cau treo
xanh di » danh di, vanh dai, xanh tai
cuu ban » cuu van, cua ban, cuu san
qua cam » qua cham, qua cac, qua ca
cam cuu » cham cuu, cap cuu
nang mo » nang meo, nang ma, nang co
mo hoc » mon hoc, co hoc
sac ky » cac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) OR (sai ky)) nang mo hoc. hieu qua cam cuu ban ((banh chi) or (xanh di)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sai ky)) nang mo hoc. hieu qua cam cuu ban ((banh chi) OR (xanh di)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) OR (sai ky)) nang mo hoc. hieu qua cam cuu ban ((banh chi) or (xanh di)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) OR (sai ky)) nang mo hoc. hieu qua cam cuu ban ((banh chi) or (xanh di)) cuu tre*.