Perhaps you should try some spelling variations:
nhanh ngan » chinh ngan, thanh nhan
sach than » sach tham, sach han, sach tranh
vu nhanh » vu khanh, vu thanh, vu hanh
thuy khi » thuy loi, thuy nha, huu khi
su sach » so sach, vu sach
hay khi » nhay khi, chat khi, hay nghi
ky khi » ky thi, ly khi

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 than ky khi đong luc ) or ( vu nhanh ngan ((hay khi) or (thuy khi)) đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach than ky khi đong luc ) OR ( vu nhanh ngan ((hay khi) OR (thuy khi)) đong luc )).
• Adding a wildcard symbol may retrieve word variants: (( su sach than ky khi đong luc ) or ( vu nhanh ngan ((hay khi) or (thuy khi)) đong luc ))*.