Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh hoai » thanh hoa, thanh hai, thanh oai
van thanh » ban thanh, van tuan
hoai cua » hoi cua, hoa cua, hai cua
duc van » duc va, duc tan, duc manh
nang xa » nang x, lang xa, nang ma
cua tu » cua tuc, cua su, cua cu
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu hoach) or (thuoc sach)) ky nang xa hoi. hieu ((ve cam) or (ve cac)) duc van thanh hoai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu hoach) OR (thuoc sach)) ky nang xa hoi. hieu ((ve cam) OR (ve cac)) duc van thanh hoai cua tu.
• Adding a wildcard symbol may retrieve word variants: ((thu hoach) or (thuoc sach)) ky nang xa hoi. hieu ((ve cam) or (ve cac)) duc van thanh hoai cua tu*.