Perhaps you should try some spelling variations:
duong sach » duong manh
cuon sach » cuoc cach, co sach, nuoc sach
nang xa » nang x, lang xa, nang ma
dan dai » dat dai, can dai, dan dat
ve cap » le cap, ve cai, ve cau
ve cac » va cac, vien cac
va dan » ca dan, va dao, va dau
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((cuon sach) or (duong sach)) ky nang xa hoi. hieu ((ve cap) OR (ve cac)) nuoc va dan dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((cuon sach) OR (duong sach)) ky nang xa hoi. hieu ((ve cap) OR (ve cac)) nuoc va dan dai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((cuon sach) or (duong sach)) ky nang xa hoi. hieu ((ve cap) OR (ve cac)) nuoc va dan dai cua te*".