Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
tham thuc » pham thuc, tam thuc, thai thuc
pham chuc » pham duc, pham huu, kham chua
nang mai » nang ma, nang tai, lang mai
hieu van » hieu va, thien van, lieu va
cuu tre » cua tre, cau tren, cau treo
mai hoi » mai khoi, dai hoi, lai hoi
va hanh » van hanh, va thanh, va danh
vi cuu » vi luu, vinh cuu
tu sai » tu bai, tu san, tu cai
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang mai hoi. hieu van ((tham thuc) or (((pham chuc) or (nham thuc)))) va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang mai hoi. hieu van ((tham thuc) OR (((pham chuc) OR (nham thuc)))) va hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang mai hoi. hieu van ((tham thuc) or (((pham chuc) or (nham thuc)))) va hanh vi cuu tre*.