Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh ve » hanh ve, thanh va, thanh vien
cham duc » pham duc, cham soc, pham duy
cua tre » cua te, cua triet, dua tren
duc van » duc va, duc tan, duc manh
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
tang ha » lang ha, tang ma, trung ha
cuu tre » cau tren, cau treo
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: thu ((sac ky) OR (sai ky)) tang ha noi. hieu vu cham duc van thanh ve ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sac ky) OR (sai ky)) tang ha noi. hieu vu cham duc van thanh ve ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sac ky) OR (sai ky)) tang ha noi. hieu vu cham duc van thanh ve ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: thu ((sac ky) OR (sai ky)) tang ha noi. hieu vu cham duc van thanh ve ((cua tre) or (cuu tre))*.