Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va xanh » va danh, va hanh, va anh
xanh di » danh di, vanh dai, xanh tai
cu tren » tu tren, dua tren
sach o » sach lo, sac o, sach y
o lang » hoa lang, hoi lang
di cu » di cau, di cua, di du

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 o lang xa hoi. hieu va ((pham duc) or (cam xuc)) va xanh di cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach o lang xa hoi. hieu va ((pham duc) OR (cam xuc)) va xanh di cu tren.
• Adding a wildcard symbol may retrieve word variants: tu sach o lang xa hoi. hieu va ((pham duc) or (cam xuc)) va xanh di cu tren*.