Perhaps you should try some spelling variations:
thi cong » tai cong, thien cong
thi nang » ki nang, thi hanh
va danh » va dinh, va hanh, dia danh
cam duc » cam xuc, cao duc, pham duc
sach ky » sac ky, sach y, sach ty
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
va dan » ca dan, va dao, va dau
vi cua » vai cua, di cua

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 ky nang ma hoi. ((thi nang) OR (thi cong)) cam duc ((va danh) or (va dan)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. ((thi nang) OR (thi cong)) cam duc ((va danh) OR (va dan)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. ((thi nang) OR (thi cong)) cam duc ((va danh) or (va dan)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. ((thi nang) OR (thi cong)) cam duc ((va danh) or (va dan)) vi cua tre*.