Perhaps you should try some spelling variations:
danh dien » dinh dien, danh kien, danh lien
tham soc » tham nuoc, thai son, ham so
dien duc » dien cuc, dien luc, tien duc
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
duc tre » duoc tren, duc tien
sach v » sach va, sach 2, sach vay

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach v) or (sach y)) nang xa hoi. hieu qua ((tham soc) or (cham soc)) va danh dien duc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach y)) nang xa hoi. hieu qua ((tham soc) OR (cham soc)) va danh dien duc tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach y)) nang xa hoi. hieu qua ((tham soc) or (cham soc)) va danh dien duc tre*.