Perhaps you should try some spelling variations:
cau thuc » cau truc, cuu thuc, can thuc
van tuan » van quan, van ban, anh tuan
van anh » van thanh, tuan anh, van minh
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
va cau » van cau, va cac, va dau
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
de cua » te cua, dieu cua
le cua » ly cua
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang ma hoi. hieu va cau thuc ((van anh) or (van tuan)) ((de cua) or (le cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang ma hoi. hieu va cau thuc ((van anh) OR (van tuan)) ((de cua) OR (le cua)) tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang ma hoi. hieu va cau thuc ((van anh) or (van tuan)) ((de cua) or (le cua)) tre*.