Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
va cham » va chat, va tham
tai cua » thai cua, tai cuc, tri cua
xuc van » duc van, luc van, vuc van
te sach » toc sach
cau hoa » cau hoi
ky dang » ky nang, ky danh
ty dang » ty xang, ty hang, ty dong
va cam » va cac, va cao, va cai

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 ((ty dang) OR (ky dang)) cau hoa. hieu ((va cam) or (va cham)) xuc van hanh tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty dang) OR (ky dang)) cau hoa. hieu ((va cam) OR (va cham)) xuc van hanh tai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty dang) OR (ky dang)) cau hoa. hieu ((va cam) or (va cham)) xuc van hanh tai cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty dang) OR (ky dang)) cau hoa. hieu ((va cam) or (va cham)) xuc van hanh tai cua triet*.