Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
cham tuc » nham thuc, pham thuc, tham thuc
nang xa » lang xa, nang ma, mang xa
danh va » doanh va, hanh va, anh va
va danh » va dinh, va dan, va hanh
hieu va » hieu qua
va cau » van cau, va cac, va dau
tuc va » thuc va, truc va, tuc xa
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky ((nang xa) or (nang x)) hoi. ((hieu va) OR (lieu va)) cham tuc va danh va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((nang xa) OR (nang x)) hoi. ((hieu va) OR (lieu va)) cham tuc va danh va cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((nang xa) or (nang x)) hoi. ((hieu va) OR (lieu va)) cham tuc va danh va cau tren".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang xa) or (nang x)) hoi. ((hieu va) OR (lieu va)) cham tuc va danh va cau tren*.