Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
thanh vi » hanh vi, thanh va, thanh ve
tu sach » su sach, te sach, tu cach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va cham » va chat, va tham
luu tre » luu tru, cuu tre, luy tre
y lang » o lang, _ lang, tay lang
xuc va » tuc va, luc va, xac va
vi luu » vi lua

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) OR (thu sach)) y lang xa hoi. hieu va cham ((xuc va) or (duc va)) thanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y lang xa hoi. hieu va cham ((xuc va) OR (duc va)) thanh vi luu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) y lang xa hoi. hieu va cham ((xuc va) or (duc va)) thanh vi luu tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) y lang xa hoi. hieu va cham ((xuc va) or (duc va)) thanh vi luu tre*.