Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
hai cua » thai cua, dai cua, hoi cua
thuc xa » thuc xay, tuc xa, thuc va
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
ma hoi » mai hoi, xa hoi, ma hoa
tu cai » tu cac, tu can, tu bai
xa dan » ca dan, xa dai, va dan
vi cua » vai cua, di cua
tu sai » tu bai, tu san, tu lai

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) or (tu cai)) ky sang ma hoi. hieu ve pham thuc xa dan ((vi cua) or (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sai) OR (tu cai)) ky sang ma hoi. hieu ve pham thuc xa dan ((vi cua) OR (hai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sai) or (tu cai)) ky sang ma hoi. hieu ve pham thuc xa dan ((vi cua) or (hai cua)) tre*.