Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
hang di » hang doi, hang vi, hang dien
hanh di » hanh vi, hanh de, danh di
cua xuc » cua duc, cua tuc, cua cuc
hieu ve » hieu va, hieu van
ve cua » le cua, de cua, te cua
xuc va » duc va, tuc va, luc va
y nang » ky nang, ly nang, v nang
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu ve cua xuc va ((hanh di) or (hang di)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang x hoi. hieu ve cua xuc va ((hanh di) OR (hang di)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) y nang x hoi. hieu ve cua xuc va ((hanh di) or (hang di)) cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) y nang x hoi. hieu ve cua xuc va ((hanh di) or (hang di)) cua te*.