Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh thai » anh thai, dang thai, dinh thai
hieu van » hieu va, thien van, lieu va
thai cua » than cua, tai cuc, tri cua
thu sach » tu sach, thuat sach, thuoc sach
va danh » va dinh, va dan, va hanh
cam duc » cam xuc, cao duc, pham duc
te sach » toc sach
hieu ve » hieu va
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa

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) or (thu sach)) ky nang ma hoi. ((hieu ve) OR (hieu van)) cam duc va danh thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu sach)) ky nang ma hoi. ((hieu ve) OR (hieu van)) cam duc va danh thai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thu sach)) ky nang ma hoi. ((hieu ve) OR (hieu van)) cam duc va danh thai cua triet*".