Perhaps you should try some spelling variations:
hien bach » vien bach, thien hach, hien hanh
hieu hien » bieu hien, dieu hien, chieu chien
su sach » so sach
vu sach » vu bach, vu khach
nang xa » nang x, lang xa, nang ma
tuoc va » thuoc va, nuoc va, duoc va
dinh du » dinh duc, dinh cu, dinh tu
y nang » ky nang, ly nang, v nang
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: ((su sach) OR (vu sach)) y nang xa hoi. hieu hien bach ((tuoc va) or (duc va)) dinh du cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang xa hoi. hieu hien bach ((tuoc va) OR (duc va)) dinh du cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) y nang xa hoi. hieu hien bach ((tuoc va) or (duc va)) dinh du cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) y nang xa hoi. hieu hien bach ((tuoc va) or (duc va)) dinh du cua te*.