Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
dan hanh » dang hanh, dan khanh, dan thanh
nang noi » nang doc
thuc dan » thuc hanh, hoc dan, thuc vat
ve pham » vi pham, v pham, ve phan
nang co » nang cao, nang doc, nang hoc
doi cua » dai cua, hoi cua
hieu ve » hieu va, hieu van
de cua » le cua, te cua, dieu cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai 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 sac ky ((nang co) OR (nang noi)) hoi. hieu ve pham thuc dan hanh ((doi cua) or (de cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((nang co) OR (nang noi)) hoi. hieu ve pham thuc dan hanh ((doi cua) OR (de cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((nang co) OR (nang noi)) hoi. hieu ve pham thuc dan hanh ((doi cua) or (de cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang co) OR (nang noi)) hoi. hieu ve pham thuc dan hanh ((doi cua) or (de cua)) te*.