Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
trinh cua » tinh cua, trinh luat, trinh luan
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
cam luc » cam xuc, cau luc
va hanh » van hanh, va thanh, va danh
van cam » van nam, van lam, van cau
long ha » dong ha, cong ha, dong hoa
sach o » sach lo, sac o, sach y
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach o ((lang ha) OR (long ha)) hoi. thien van cam luc va hanh ((trinh cua) or (trinh quan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach o ((lang ha) OR (long ha)) hoi. thien van cam luc va hanh ((trinh cua) OR (trinh quan)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach o ((lang ha) OR (long ha)) hoi. thien van cam luc va hanh ((trinh cua) or (trinh quan)) tu".
• Adding a wildcard symbol may retrieve word variants: toc sach o ((lang ha) OR (long ha)) hoi. thien van cam luc va hanh ((trinh cua) or (trinh quan)) tu*.