Perhaps you should try some spelling variations:
thanh chong » thanh chuong, thanh cong, nhanh chong
chieu sach » chinh sach, chiet tach, chieu sang
chong phap » phuong phap
phap nhung » pha nhung, phap phuong, phap nang
nhung cong » dung cong, thong cong, hang cong
hieu cach » hieu cac, hieu ca, biet cach
cong van » cong vang, cong san, song van
van hang » van khang, van hoang, van thang
hang cau » hang dau, hang ca, nhung cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu cach) or (chieu sach)) - thanh chong phap nhung cong van hang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu cach) OR (chieu sach)) - thanh chong phap nhung cong van hang cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu cach) or (chieu sach)) - thanh chong phap nhung cong van hang cau*.