Perhaps you should try some spelling variations:
sach tham » sach nha
tham hanh » pham hanh, tham canh, tham manh
cua triet » cua viet, su triet, va triet
doc sach » hoc sach, toc sach, nuoc sach
hanh xa » hanh va, hanh ma, hanh xu
hieu va » lieu va, hieu qua
cac toc » cac toi, cac nuoc, cac thoi
xa hanh » xa thanh, xa khanh, va hanh
cac tu » cac thu, cach tu, cac du

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach tham hanh xa hoi. hieu va ((cac tu) or (cac toc)) xa hanh vi ((cua triet) or (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach tham hanh xa hoi. hieu va ((cac tu) OR (cac toc)) xa hanh vi ((cua triet) OR (cua vat)).
• Adding a wildcard symbol may retrieve word variants: doc sach tham hanh xa hoi. hieu va ((cac tu) or (cac toc)) xa hanh vi ((cua triet) or (cua vat))*.