Perhaps you should try some spelling variations:
hoach nhanh » hoc nhanh, cach nhanh
sach tranh » canh tranh
tranh cong » thanh cong, trinh cong, tran cong
nhanh cong » nhanh chong, thanh cong, nganh cong
cong khi » cong thai, khong khi, co khi
cong lai » chong lai, cong hai, cong lap
tu sach » thu sach, su sach, te 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 tranh cong khi đong luc ) or ( thu hoach nhanh cong lai đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tranh cong khi đong luc ) OR ( thu hoach nhanh cong lai đong luc )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tranh cong khi đong luc ) or ( thu hoach nhanh cong lai đong luc ))*.