Perhaps you should try some spelling variations:
cam thuyet » bai thuyet, bam huyet, cac tuyet
thu sach » thuat sach, thuoc sach, thu hoach
tang tai » hang tai, dung tai, sang tao
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
va tang » va trang, van tang, ha tang
cuc tre » duc tre, cua tre, cuu tre
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao

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. lieu va cam thuyet va tang tai cuc tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) y nang xa hoi. lieu va cam thuyet va tang tai cuc tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) y nang xa hoi. lieu va cam thuyet va tang tai cuc tre*.