Perhaps you should try some spelling variations:
vat dung » van dung, va dung, viet dung
cam thu » nam thu, cac thu, ca thu
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
cua tre » cuu tre, cua triet, dua tren
hieu ve » hieu va, hieu van
dung co » dung cho, dung cong, dung cua
so sai » so dai, so hai, do sai
cua te » cua tu
sai ky » sac ky
cam tu » nam tu, dam tu, tam tu
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sai ky dang ha hoi. hieu ve ((cam tu) OR (cam thu)) vat dung co ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sai ky dang ha hoi. hieu ve ((cam tu) OR (cam thu)) vat dung co ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sai ky dang ha hoi. hieu ve ((cam tu) OR (cam thu)) vat dung co ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: so sai ky dang ha hoi. hieu ve ((cam tu) OR (cam thu)) vat dung co ((cua tre) or (cua te))*.