Perhaps you should try some spelling variations:
cham duc » pham duc, pham duy, phan duc
ly quang » le quang, vu quang
te sach » toc sach
hang vi » hang va, hanh vi, hang di
va hang » van hang, va nang, va lang
hieu va » lieu va, hieu qua
vi cua » vai cua, di 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: te sach ((ly hang) or (ly quang)) xa hoi. hieu va ((cham duc) OR (cham soc)) va hang vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ly hang) OR (ly quang)) xa hoi. hieu va ((cham duc) OR (cham soc)) va hang vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ly hang) or (ly quang)) xa hoi. hieu va ((cham duc) OR (cham soc)) va hang vi cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ((ly hang) or (ly quang)) xa hoi. hieu va ((cham duc) OR (cham soc)) va hang vi cua te*.