Perhaps you should try some spelling variations:
te sach » toc sach
hanh de » hanh ve, hanh kem
hanh le » thanh le, hanh ve, manh le
sach ky » sac ky, sach y, sach ty
phat lo » phap lo, phot lo, nhat loi
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, mang may
cuu tre » cua tre, cau tren, cau treo
lo van » le van, vo van, so van

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 ky ((nang ma) or (nang cao)) hoi. hieu va phat lo van ((hanh le) OR (hanh de)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang ma) OR (nang cao)) hoi. hieu va phat lo van ((hanh le) OR (hanh de)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang ma) or (nang cao)) hoi. hieu va phat lo van ((hanh le) OR (hanh de)) cuu tre*".