Perhaps you should try some spelling variations:
phan thuc » nhan thuc, pham thuc, phan khuc
phap thuc » phap thu, phap hoc, phap tu
nang noi » nang doc
hieu van » hieu va, thien van, lieu va
dan hanh » dang hanh, dan khanh, dan thanh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
noi hoi » noi doi, doi hoi, hoi hoi
hanh di » hanh vi, hanh de, hang di
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: tu sach ky nang noi hoi. hieu van ((phan thuc) or (phap thuc)) dan hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang noi hoi. hieu van ((phan thuc) OR (phap thuc)) dan hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang noi hoi. hieu van ((phan thuc) or (phap thuc)) dan hanh di cua te*.