Perhaps you should try some spelling variations:
hoach nhah » hoach ha, hoach thay
khong khi » khong he
nay khong » bay khong, hay khong, nhan khong
nhah cong » nhanh cong, nhap cong, nhanh chong
cong khi » cong thai, co khi, cong ha
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((tu sach) OR (su sach)) nay khong khi đong luc ) or ( thu hoach nhah cong khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((tu sach) OR (su sach)) nay khong khi đong luc ) OR ( thu hoach nhah cong khi đong luc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((tu sach) OR (su sach)) nay khong khi đong luc ) or ( thu hoach nhah cong khi đong luc ))".
• Adding a wildcard symbol may retrieve word variants: (( ((tu sach) OR (su sach)) nay khong khi đong luc ) or ( thu hoach nhah cong khi đong luc ))*.