Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
lai cua » hai cua, lai chau, thai cua
xuc va » duc va, tuc va, luc va

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 thu nang xa hoi. ((hieu ve) or (hieu va)) cam xuc va hanh ((lai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu nang xa hoi. ((hieu ve) OR (hieu va)) cam xuc va hanh ((lai cua) OR (dai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach thu nang xa hoi. ((hieu ve) or (hieu va)) cam xuc va hanh ((lai cua) or (dai cua)) tre*.