Perhaps you should try some spelling variations:
lanh thai » lanh hai, anh thai, lang thai
mon viet » man viet, mo viet, muong viet
son viet » song viet, san viet, thon viet
va lanh » va lang, va danh, va hanh
tu sach » thu sach, su sach, te sach
may hoi » may thoi, tay hoi, mai hoi
y mang » cay mang
xuc va » duc va, tuc va, luc va
va cam » va cham, va cao, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y mang may hoi. hieu ((va cam) OR (va cac)) xuc va lanh thai ((son viet) or (mon viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y mang may hoi. hieu ((va cam) OR (va cac)) xuc va lanh thai ((son viet) OR (mon viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y mang may hoi. hieu ((va cam) OR (va cac)) xuc va lanh thai ((son viet) or (mon viet))".
• Adding a wildcard symbol may retrieve word variants: tu sach y mang may hoi. hieu ((va cam) OR (va cac)) xuc va lanh thai ((son viet) or (mon viet))*.