Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
cau tren » dau tren, ca tren, cau treo
hanh vai » hanh vi, hanh va, hanh tai
vu cham » va cham, vu kham, tu cham
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
hieu vu » hieu va, hieu ve, hieu su
cu tren » tu tren, dua tren
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((nang ma) OR (nang x)) hoi. hieu vu cham tuc va hanh vai ((cau tren) OR (cu tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang ma) OR (nang x)) hoi. hieu vu cham tuc va hanh vai ((cau tren) OR (cu tren))".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang ma) OR (nang x)) hoi. hieu vu cham tuc va hanh vai ((cau tren) OR (cu tren))*.