Perhaps you should try some spelling variations:
cong cong » cong dong, trong cong, dung cong
tap trac » tap toan
trac thu » tran thu, tran thuy, thac thuy
co dang » cao dang, co dong, xo dang
co dan » co ban, ca dan, cao dang
vat y » vat ly, vat _
y thu » ly thu, ky thu, y thuc
tuyen » truyen, quyen

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

• Performing a fuzzy search may retrieve terms with similar spellings: tuyen tap trac thu đe ((co dang) OR (co dan)) vat y thu cong cong~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tuyen tap trac thu đe ((co dang) OR (co dan)) vat y thu cong cong".
• Adding a wildcard symbol may retrieve word variants: tuyen tap trac thu đe ((co dang) OR (co dan)) vat y thu cong cong*.