Perhaps you should try some spelling variations:
thuat sang » thuat song, thuat san, thuat bang
ban hanh » ban hang
dang xay » dang van, van xay
hanh di » hanh vi, hanh de, hang di
sang ky » sang kyo, dang ky, tang ky
lang xa » lang ha, lang van
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
di cua » dai cua, doi cua, de cua

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

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