Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
luc van » luoc van, luu van, luc va
duc van » duc va, duc tan, duc manh
han tri » han tai, van tri, thanh tri
y nang » ky nang, ly nang, v nang
va cau » van cau, va cac, va dau
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (te sach)) y nang xa hoi. lieu va cau ((luc van) OR (duc van)) han tri cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) y nang xa hoi. lieu va cau ((luc van) OR (duc van)) han tri cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (te sach)) y nang xa hoi. lieu va cau ((luc van) OR (duc van)) han tri cua cu".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) y nang xa hoi. lieu va cau ((luc van) OR (duc van)) han tri cua cu*.