Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
hieu ve » hieu van
cam luc » cam xuc, cau luc
vi cua » vai cua, di cua
luc va » duc va, tuc va, loc va
y lang » _ lang, tay lang, yen lang
o lang » hoa lang, hoi lang
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 ((y lang) OR (o lang)) xa hoi. ((hieu ve) or (hieu va)) cam luc va thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y lang) OR (o lang)) xa hoi. ((hieu ve) OR (hieu va)) cam luc va thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y lang) OR (o lang)) xa hoi. ((hieu ve) or (hieu va)) cam luc va thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((y lang) OR (o lang)) xa hoi. ((hieu ve) or (hieu va)) cam luc va thanh vi cua te*.