Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
doan van » doan va, hoang van, luan van
luc vay » luc va, luoc van
van cua » vang cua, ban cua, dan cua
luc van » luoc van, luu van, duc van
tu sach » su sach, te sach, tu cach
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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 nang xa hoi. hieu ve cham ((luc vay) OR (luc van)) doan van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang xa hoi. hieu ve cham ((luc vay) OR (luc van)) doan van cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) y nang xa hoi. hieu ve cham ((luc vay) OR (luc van)) doan van cua tre*".