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