Perhaps you should try some spelling variations:
thien cac » thien cau, thieu cac, trien cac
va triet » va thiet, va trien, ve triet
hien cac » vien cac, hieu cac, dien cac
cuu tre » cua tre, cau tren, cau treo
dinh va » dinh van, dinh ve, tinh va
va dinh » van dinh, va kinh, va tinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
lao va » tao va, cao va, bao va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. hieu ((hien cac) or (thien cac)) lao va dinh va ((cuu tre) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ((hien cac) OR (thien cac)) lao va dinh va ((cuu tre) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ((hien cac) or (thien cac)) lao va dinh va ((cuu tre) or (va triet))*.