Perhaps you should try some spelling variations:
dat thanh » dao thanh, dat khanh, dang thanh
da thanh » dao thanh, dam thanh, dan thanh
nghia xa » nghia mac
cam thuc » am thuc, nam thuc, cam thu
vu sach » vu bach, su sach, vu khach
ty nang » ky nang, ty hang, ly nang
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
xa tre » xa tren, va tre, xa tri
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ty nang) OR (ty xang)) x hoi. hieu ve cam thuc ((da thanh) OR (dat thanh)) nghia xa tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ty nang) or (ty xang)) x hoi. hieu ve cam thuc ((da thanh) OR (dat thanh)) nghia xa tre~".
• Adding a wildcard symbol may retrieve word variants: vu sach ((ty nang) or (ty xang)) x hoi. hieu ve cam thuc ((da thanh) OR (dat thanh)) nghia xa tre*.