Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
san lang » san sang, ban lang, lan lang
chai cua » chat cua, thai cua, hai cua
bo sach » co sach
nang ca » nang cao, nang cap, nang cua
ca phoi » cap phoi, cay phoi, gap phoi
hieu ve » hieu va, hieu van
dan san » dac san, han san, tan san
chi cua » chi cuc, khi cua, cuoi cua
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) or (bo sach)) ky nang ca phoi. hieu ve cac dan san lang ((chai cua) or (chi cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (bo sach)) ky nang ca phoi. hieu ve cac dan san lang ((chai cua) OR (chi cua)) triet.
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (bo sach)) ky nang ca phoi. hieu ve cac dan san lang ((chai cua) or (chi cua)) triet*.