Perhaps you should try some spelling variations:
sach tranh » canh tranh
thieu hoat » thien hoat, hieu hoat, trien hoat
tranh hoa » thanh hoa, trinh hoa, tranh ha
hoat khi » thoat khoi, hoat doi, suat khi
toc sach » hoc sach, doc sach, thuoc sach
su sach » so sach, vu sach
hoa khi » hoa phi, hoa hi, hoa thi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach thieu hoat khi đong luc ) or ( toc sach tranh hoa khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach thieu hoat khi đong luc ) OR ( toc sach tranh hoa khi đong luc )).
• Adding a wildcard symbol may retrieve word variants: (( su sach thieu hoat khi đong luc ) or ( toc sach tranh hoa khi đong luc ))*.