Perhaps you should try some spelling variations:
tu lang » cu lang, tu lanh, xu lang
cua tre » cuu tre, cua triet, dua tren
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
lang ky » dang ky, tang ky, bang ky
hieu ve » hieu va, hieu van
va dap » va dao, va dau
ve cam » ve cham, ve cac, va cam
cam tu » cam thu, nam tu, dam tu
va cap » va cac, va cao, va cai
cua te » cua tu

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 ky ((va cap) OR (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 ky ((va cap) OR (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 ky ((va cap) OR (va dap)) phoi. hieu ve cam tu va danh vi ((cua tre) or (cua te))*".