Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
su triet » su viet, su tien, ve triet
ty nang » ky nang, ty xang, ty hang
tao hoi » tao khoi, tao boi, tay hoi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cham lo » cham o, cam lo, cham soc
su sach » so sach, vu sach
cho hoc » co hoc, khoa hoc
vai su » va su, van su, lai su
lo va » lo van, lao va, ly va

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) or (su sach)) ty nang ((tao hoi) or (cho hoc)). hieu ve cham lo va thanh vai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (su sach)) ty nang ((tao hoi) OR (cho hoc)). hieu ve cham lo va thanh vai su triet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (su sach)) ty nang ((tao hoi) or (cho hoc)). hieu ve cham lo va thanh vai su triet*.