Perhaps you should try some spelling variations:
dung tren » dung trong, dung trung
dinh tri » chinh tri
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cay duc » cao duc, cay dua, chay dua
va dinh » van dinh, va kinh, va tinh
te sai » te tai, te bai, te lai
sai ky » sac ky
va cay » 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: te sai ky nang xa hoi. hieu va cay duc va dinh tri ((((dua tren) or (dung tren))) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang xa hoi. hieu va cay duc va dinh tri ((((dua tren) OR (dung tren))) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sai ky nang xa hoi. hieu va cay duc va dinh tri ((((dua tren) or (dung tren))) or (cua te))*.