Perhaps you should try some spelling variations:
phan thuc » nhan thuc, phap thuc, pham thuc
vat hanh » vat thanh, van hanh, va hanh
nang doc » nang luc
hanh di » hanh vi, hanh de, hang di
ve phan » va phan, ke phan, ve phat
hieu ve » hieu va, hieu van
sac ky » cac ky, sai ky
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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) or (sach y)) ((nang noi) or (nang doc)) hoi. hieu ve phan thuc vat hanh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sac ky) OR (sach y)) ((nang noi) OR (nang doc)) hoi. hieu ve phan thuc vat hanh di cua tu.
• Adding a wildcard symbol may retrieve word variants: thu ((sac ky) or (sach y)) ((nang noi) or (nang doc)) hoi. hieu ve phan thuc vat hanh di cua tu*.