Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
ban thanh » ban hanh, ban hang
cham duc » pham duy, phan duc, cham cuu
vien cua » viec cua, dien cua, tien cua
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet

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 ty nang xa hoi. hieu va ((((cham duc) OR (pham duc))) or (cham soc)) ban thanh vien cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang xa hoi. hieu va ((((cham duc) OR (pham duc))) OR (cham soc)) ban thanh vien cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang xa hoi. hieu va ((((cham duc) OR (pham duc))) or (cham soc)) ban thanh vien cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang xa hoi. hieu va ((((cham duc) OR (pham duc))) or (cham soc)) ban thanh vien cua tre*.