Perhaps you should try some spelling variations:
phan thuc » nhan thuc, phap thuc, pham thuc
sach thi » sach thu, sach tai, sach thieu
thi nang » thi cong, ki nang, thi hanh
hieu van » hieu va, thien van, lieu va
van phan » van phong, van thanh, luan phan
hanh lai » hanh lam, hanh tai, thanh lap
su triet » su viet, su tien, ve triet
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh

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 thi nang xa hoi. hieu van phan thuc va hanh lai ((su triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thi nang xa hoi. hieu van phan thuc va hanh lai ((su triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: tu sach thi nang xa hoi. hieu van phan thuc va hanh lai ((su triet) or (cua viet))*.