Perhaps you should try some spelling variations:
va dinh » van dinh, va kinh, va tinh
cua tre » cuu tre, cua triet, dua tren
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
dinh vi » dinh ve, dinh viet, dinh tri
nam xuc » cam xuc, nam xua, nam thuc
va nam » van nam, ha nam, va nay
xuc va » duc va, tuc va, luc va
bai ky » sai ky, bac ky, dai ky
ban ky » van ky, dan ky
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: te ((bai ky) or (ban ky)) lang xa hoi. hieu va nam xuc va dinh vi ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((bai ky) OR (ban ky)) lang xa hoi. hieu va nam xuc va dinh vi ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((bai ky) or (ban ky)) lang xa hoi. hieu va nam xuc va dinh vi ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: te ((bai ky) or (ban ky)) lang xa hoi. hieu va nam xuc va dinh vi ((cua tre) OR (cua te))*.