Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
tay lang » tai lang, tay tang, tay quang
va thanh » gia thanh, ban thanh, va tinh
ve triet » va trien, su triet
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
ve coc » ve cuoc, ve cac, ve co
luc va » duc va, tuc va, loc va
dai ve » dap ve, dau ve, dai 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 ((tay lang) or (ky nang)) xa hoi. hieu ve coc luc va thanh dai ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((tay lang) OR (ky nang)) xa hoi. hieu ve coc luc va thanh dai ve triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((tay lang) or (ky nang)) xa hoi. hieu ve coc luc va thanh dai ve triet*.