Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
thi hanh » thi thanh
hanh dai » hanh tai, hanh dao, vanh dai
van hanh » van thanh, ban hanh, van anh
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
te sach » toc sach
cua cau » cua cac, cua chu, cua cay
cac xuc » cam xuc, chat xuc, cac cuoc
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh ma, hanh xu
cua cu » cua chu, cua su, cua co

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