Perhaps you should try some spelling variations:
sach tham » sach nha
tham hang » pham hang, thai hang, tham lang
pham thuc » phap thuc, pham chuc, nham thuc
cua triet » su triet, va triet
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
hang xa » hoang xa, hang va, hang ca

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