Perhaps you should try some spelling variations:
thuat sang » thuat song, thuat san, thuat bang
va thanh » gia thanh, ban thanh, va tinh
ban hanh » ban hang
sang ky » sang kyo, dang ky, tang ky
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
ve cam » ve cham, ve cac, va cam
di cua » doi cua, de cua, do 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 hoi. hieu ((ve cam) or (va thanh)) cua ban hanh ((di cua) OR (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sang ky lang xa hoi. hieu ((ve cam) OR (va thanh)) cua ban hanh ((di cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sang ky lang xa hoi. hieu ((ve cam) or (va thanh)) cua ban hanh ((di cua) OR (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: thuat sang ky lang xa hoi. hieu ((ve cam) or (va thanh)) cua ban hanh ((di cua) OR (dai cua)) tre*.