Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
nam danh » nam dan
te sach » toc sach
nang xa » nang x, lang xa, nang ma
vai cua » dai cua, hai cua, lai cua
cac oc » cac toc, cac hoc, cac o
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: te sach thu nang xa hoi. ((lieu va) or (hieu qua)) cac oc ((nam danh) OR (nam dinh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu nang xa hoi. ((lieu va) OR (hieu qua)) cac oc ((nam danh) OR (nam dinh)) vai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu nang xa hoi. ((lieu va) or (hieu qua)) cac oc ((nam danh) OR (nam dinh)) vai cua te*".