Perhaps you should try some spelling variations:
phan thuc » nhan thuc, phap thuc, pham thuc
nang doc » nang luc
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
thu sac » thu sach, thu san, thu xac
nang co » nang cao, nang noi, nang hoc
hieu ve » hieu va, hieu van
ve phan » va phan, ke phan, ve phat
hanh di » hanh vi, hanh de, hang di
sac ky » cac ky, sai ky
di cua » dai cua, doi cua, de cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky ((nang co) or (nang doc)) hoi. hieu ve phan thuc dan hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky ((nang co) OR (nang doc)) hoi. hieu ve phan thuc dan hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: thu sac ky ((nang co) or (nang doc)) hoi. hieu ve phan thuc dan hanh di cua te*.