Perhaps you should try some spelling variations:
voi nang » voi hang, hoi nang, voi rang
te sach » toc sach
dinh di » dinh du, dinh vi, danh di
va dinh » van dinh, va kinh, va tinh
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
vu nang » vuc nang, va nang, vu dang
va cam » va cham, va cac, va cao
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((voi nang) or (vu nang)) xa hoi. hieu va cam duc va dinh di ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((voi nang) OR (vu nang)) xa hoi. hieu va cam duc va dinh di ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: te sach ((voi nang) or (vu nang)) xa hoi. hieu va cam duc va dinh di ((cua te) or (cua tu))*.