Perhaps you should try some spelling variations:
trinh khong » tinh khong, trinh khung, thinh khong
sach trinh » sach tranh, hanh trinh, sach kinh
tranh cong » thanh cong, trinh cong, tran cong
khong khi » khong he
vu khach » vu khanh, vu khac, vay khach
cong hai » cong thai, cong ha, hoang hai
te sach » toc sach
vu sach » vu bach, su sach

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

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