Perhaps you should try some spelling variations:
dan hanh » dang hanh, dan khanh, dan thanh
chat cua » nhat cua, chat va, chat huu
van chat » cao chat
hieu van » hieu va, thien van, lieu va
dang xay » dang van, van xay
cua tre » cua te, cuu tre, cua triet
hanh ve » hanh vi, hanh va, hanh kem
cua dan » cua dang, cua ban, ca dan
nang xa » nang x, lang xa, nang ma
tu san » thu san, tu ban, tu can
ve cua » le cua, de cua, te cua
tu sai » tu bai, tu cai, tu lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sai) OR (tu san)) ky ((nang xa) or (dang xay)) hoi. hieu van chat cua dan hanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sai) OR (tu san)) ky ((nang xa) OR (dang xay)) hoi. hieu van chat cua dan hanh ve cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sai) OR (tu san)) ky ((nang xa) or (dang xay)) hoi. hieu van chat cua dan hanh ve cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sai) OR (tu san)) ky ((nang xa) or (dang xay)) hoi. hieu van chat cua dan hanh ve cua tre*.