Perhaps you should try some spelling variations:
hanh gian » thanh gian, thanh giang, manh giang
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
cam buc » cam xuc, nam buoc
cua tre » cuu tre, cua triet, dua tren
xa hanh » xa thanh, xa khanh, va hanh
van cam » van nam, van lam, van cau
sach ty » sach y, sach tu, sach thu
buc xa » tuc xa
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: thu sach ty ((mang may) or (nang x)) hoi. hieu van cam buc xa hanh gian ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((mang may) OR (nang x)) hoi. hieu van cam buc xa hanh gian ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty ((mang may) or (nang x)) hoi. hieu van cam buc xa hanh gian ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((mang may) or (nang x)) hoi. hieu van cam buc xa hanh gian ((cua tre) OR (cua te))*.