Perhaps you should try some spelling variations:
dac khanh » dat khanh, dan khanh, duc khanh
thuoc dac » thuoc dang, thuoc sach, thuc dan
nam thuoc » nam thuc, nam thu, nha thuoc
khanh le » thanh le, khanh ly, thinh le
vu khach » vu khanh, vu khac, vay khach
hieu ve » hieu va, hieu van
so sach » so sanh, bo sach, co sach
ve nam » he nam, va nam, le nam
y nang » ky nang, ly nang, v nang
le cua » ly cua
cua te » cua tu
o hai » co hai, so hai, o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (vu khach)) y nang ((x ho) or (o hai)). hieu ve nam thuoc dac khanh le cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (vu khach)) y nang ((x ho) OR (o hai)). hieu ve nam thuoc dac khanh le cua te.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (vu khach)) y nang ((x ho) or (o hai)). hieu ve nam thuoc dac khanh le cua te*.