Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
toc sach » hoc sach, doc sach, thuoc sach
van cau » van dau, van hau, van chat
thi van » thi lan, thi hanh, thi nang
y long » sy long, o long, ly luong
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
ha hoi » hoa hoi, ha noi, xa hoi
cua tu » cua tuc, cua su, cua cu

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 ((y long) or (_ long)) ha hoi. thi van cau ((xuc va) or (luc va)) hanh trinh cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((y long) OR (_ long)) ha hoi. thi van cau ((xuc va) OR (luc va)) hanh trinh cua tu.
• Adding a wildcard symbol may retrieve word variants: toc sach ((y long) or (_ long)) ha hoi. thi van cau ((xuc va) or (luc va)) hanh trinh cua tu*.