Perhaps you should try some spelling variations:
dan thanh » dang thanh, danh thanh, ban thanh
thuc dan » thuc hanh, hoc dan, thuc vat
cam thuc » am thuc, nam thuc, cam thu
vai cua » dai cua, hai cua, lai cua
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu cua
so sac » so sach, so dac

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky nang ma hoi. hieu ve cam thuc dan thanh ((vai cua) or (((di cua) OR (de cua)))) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky nang ma hoi. hieu ve cam thuc dan thanh ((vai cua) OR (((di cua) OR (de cua)))) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky nang ma hoi. hieu ve cam thuc dan thanh ((vai cua) or (((di cua) OR (de cua)))) tre*".