Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
chat loc » chat hoc, chat doc, chat long
cau tren » cu tren, dau tren, ca tren
ly nang » ky nang, ly hang, ly vang
tu sach » su sach, te sach, tu cach
va chat » van chat, va phat, cao chat
va tinh » may tinh
tinh va » tich va, trinh van, trinh vat
y nang » ky nang, v nang, may nang
loc va » hoc va, luc va
va cau » van cau, va cac, va dau

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 (tu sach)) ((y nang) or (ly nang)) xa hoi. lieu va chat loc va tinh va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) ((y nang) OR (ly nang)) xa hoi. lieu va chat loc va tinh va cau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) ((y nang) or (ly nang)) xa hoi. lieu va chat loc va tinh va cau tren*".