Perhaps you should try some spelling variations:
dap phoi » cap phoi, gap phoi, dap phap
tu lang » tu lanh, xu lang, tu quang
cua tre » cuu tre, cua triet, dua tren
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
hieu ve » hieu va, hieu van
cu lang » cua lang, xu lang, chi lang
va dap » va dao, va dau
ve cam » ve cham, ve cac, va cam
cam tu » cam thu, nam tu, dam tu
cua te » cua tu
ky va » ly va, ke va, my va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu lang) OR (cu lang)) ky va dap phoi. hieu ve cam tu va danh vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu lang) OR (cu lang)) ky va dap phoi. hieu ve cam tu va danh vi ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu lang) OR (cu lang)) ky va dap phoi. hieu ve cam tu va danh vi ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: ((tu lang) OR (cu lang)) ky va dap phoi. hieu ve cam tu va danh vi ((cua tre) or (cua te))*.