Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
luoc van » luoc can, luoc va, luot van
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
luc van » luu van, duc van, luc va
cua tre » cuu tre, cua triet, dua tren
y lang » o lang, _ lang, tay lang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y lang xa hoi. hieu va cac ((luc van) OR (luoc van)) lanh dao ((cua te) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y lang xa hoi. hieu va cac ((luc van) OR (luoc van)) lanh dao ((cua te) OR (cua tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y lang xa hoi. hieu va cac ((luc van) OR (luoc van)) lanh dao ((cua te) or (cua tre))*".