Perhaps you should try some spelling variations:
va thanh » ban thanh, va tinh, le thanh
nang ma » tang ma, sang ma, nang cao
tu sai » tu bai, tu san, tu cai
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao
sai ky » sac ky
ve cam » ve cham, ve cac, ve cai
ma hoi » mai hoi, xa hoi, ma hoa

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 ky nang ma hoi. hieu ((ve cam) or (va cam)) luc ((va thanh) OR (gia thanh)) vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang ma hoi. hieu ((ve cam) OR (va cam)) luc ((va thanh) OR (gia thanh)) vi cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky nang ma hoi. hieu ((ve cam) or (va cam)) luc ((va thanh) OR (gia thanh)) vi cua vat".
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang ma hoi. hieu ((ve cam) or (va cam)) luc ((va thanh) OR (gia thanh)) vi cua vat*.