Perhaps you should try some spelling variations:
thanh sang » thanh san, thanh hang, thanh hoang
cua triet » cua viet, su triet, va triet
may nang » may nong, ky nang, cam nang
sang cua » mang cua, song cua, hang cua
dua ban » dia ban, cua ban, qua ban
duc man » duc manh, duc tan, duc mau
tu sach » thu sach, su sach, te sach
lieu ca » lieu cao, lieu va, lieu ma
v nang » va nang, vu nang, van nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((may nang) or (v nang)) xa hoi. lieu ca dao ((duc man) or (dua ban)) thanh sang cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((may nang) OR (v nang)) xa hoi. lieu ca dao ((duc man) OR (dua ban)) thanh sang cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((may nang) or (v nang)) xa hoi. lieu ca dao ((duc man) or (dua ban)) thanh sang cua triet*.