Perhaps you should try some spelling variations:
su sach » so sach, vu sach
dinh de » dinh ve, dinh du, dinh le
hieu ve » hieu va, hieu van
v nang » va nang, vu nang, van nang
ve cac » va cac, vien cac
y nang » ky nang, ly nang, may nang
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
de cua » le cua, te cua, dieu cua
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: su sach ((y nang) or (v nang)) xa hoi. hieu ve cac ((xuc va) OR (tuc va)) dinh de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (v nang)) xa hoi. hieu ve cac ((xuc va) OR (tuc va)) dinh de cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) or (v nang)) xa hoi. hieu ve cac ((xuc va) OR (tuc va)) dinh de cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) or (v nang)) xa hoi. hieu ve cac ((xuc va) OR (tuc va)) dinh de cua te*.