Perhaps you should try some spelling variations:
chai chuc » chuan chuc, hoi chuc, pham chuc
cau tren » cu tren, dau tren, ca tren
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau treo
va danh » va dinh, va dan, dia danh
vu sach » vu bach, su sach, vu khach
va hanh » van hanh, va thanh, ban hanh
va chai » va cai, va chat, va cham
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: vu sach ky nang ma hoi. lieu va chai chuc ((va hanh) OR (va danh)) ve ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang ma hoi. lieu va chai chuc ((va hanh) OR (va danh)) ve ((cuu tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang ma hoi. lieu va chai chuc ((va hanh) OR (va danh)) ve ((cuu tre) or (cau tren))".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang ma hoi. lieu va chai chuc ((va hanh) OR (va danh)) ve ((cuu tre) or (cau tren))*.