Perhaps you should try some spelling variations:
chat duc » chat xuc, chat doc, chet duoc
tu cach » tu cac
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
nang ma » tang ma, sang ma, nang cao
te sach » toc sach
ma hoi » mai hoi, xa hoi, ma hoa
ca cua » co cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (te sach)) ky nang ma hoi. hieu va chat duc ((va danh) OR (va dinh)) ca cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) ky nang ma hoi. hieu va chat duc ((va danh) OR (va dinh)) ca cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (te sach)) ky nang ma hoi. hieu va chat duc ((va danh) OR (va dinh)) ca cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) ky nang ma hoi. hieu va chat duc ((va danh) OR (va dinh)) ca cua te*.