Perhaps you should try some spelling variations:
trinh cua » trinh luat, trinh quan, trinh luan
toc sach » hoc sach, doc sach, thuoc sach
tinh cua » sinh cua, tinh chat, tranh cua
thi hanh » thi thanh
hanh cam » hanh cham, hanh lam, hanh nam
lang ha » long ha
luc va » duc va, tuc va, loc va
sach o » sach lo, sac o, sach y
xuc va » duc va, tuc va, xac va
ha hoi » hoa hoi, ha noi, xa hoi
o lang » hoa lang, hoi lang

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