Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
va thanh » gia thanh, ban thanh, va tinh
thanh te » thanh ve, thanh de, thanh le
su sach » so sach, vu sach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
te cua » tue cua, le cua, de 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 (te sach)) ky nang xa hoi. ((hieu va) OR (hieu qua)) cham duc va thanh te cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ky nang xa hoi. ((hieu va) OR (hieu qua)) cham duc va thanh te cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (te sach)) ky nang xa hoi. ((hieu va) OR (hieu qua)) cham duc va thanh te cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) ky nang xa hoi. ((hieu va) OR (hieu qua)) cham duc va thanh te cua te*.