Perhaps you should try some spelling variations:
thanh sang » thanh san, thanh hang, thanh hoang
tan thanh » tran thanh, tang thanh, toan thanh
thu sach » tu sach, thuat sach, thuoc sach
sang cua » mang cua, song cua, hang cua
ly nang » ky nang, ly hang, ly vang
va cao » va cac, va co, va dao
ve cao » ve bao, ve cac, ve co
y nang » ky nang, v nang, may nang
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: thu sach ((y nang) or (ly nang)) xa hoi. hieu ((ve cao) OR (va cao)) duc tan thanh sang cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y nang) OR (ly nang)) xa hoi. hieu ((ve cao) OR (va cao)) duc tan thanh sang cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((y nang) or (ly nang)) xa hoi. hieu ((ve cao) OR (va cao)) duc tan thanh sang cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ((y nang) or (ly nang)) xa hoi. hieu ((ve cao) OR (va cao)) duc tan thanh sang cua te*.