Perhaps you should try some spelling variations:
hanh vinh » thanh vinh, khanh vinh, hanh tinh
thu sach » tu sach, thuat sach, thuoc sach
vinh cuu » dinh cuu, sinh cua, dinh cu
duc van » duc va, duc tan, duc manh
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
luc va » duc va, tuc va, loc va
ve cau » ke cau, va cau, ve cac

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) or (thu hoach)) ky dang xa hoi. hieu ve cau ((luc va) or (duc van)) hanh vinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thu hoach)) ky dang xa hoi. hieu ve cau ((luc va) OR (duc van)) hanh vinh cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thu hoach)) ky dang xa hoi. hieu ve cau ((luc va) or (duc van)) hanh vinh cuu tre*.