Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
thi hanh » thi thanh
van hanh » van thanh, ban hanh, van anh
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
te sach » toc sach
hanh di » hanh vi, hanh de, hang di
cua chu » sua chua
cac xuc » chat xuc, cac cuoc, cac quoc
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh ma, hanh xu
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach thi hanh xa hoi. hieu ve ((((cac xuc) OR (cam xuc))) or (cac nuoc)) van hanh di cua chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thi hanh xa hoi. hieu ve ((((cac xuc) OR (cam xuc))) OR (cac nuoc)) van hanh di cua chu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thi hanh xa hoi. hieu ve ((((cac xuc) OR (cam xuc))) or (cac nuoc)) van hanh di cua chu".
• Adding a wildcard symbol may retrieve word variants: te sach thi hanh xa hoi. hieu ve ((((cac xuc) OR (cam xuc))) or (cac nuoc)) van hanh di cua chu*.