Perhaps you should try some spelling variations:
tang dai » tang tai, lang dai, tang da
hanh vai » hanh vi, hanh va, hanh tai
tang dan » tang van, tung dan, tang luan
hieu sau » hieu su, hieu suat, tieu su
vai cua » dai cua, hai cua, lai cua
sau cam » sau lam, cau cham, sau chan
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky ((tang dai) OR (tang dan)) moi. hieu sau cam ((xuc va) or (tuc va)) hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky ((tang dai) OR (tang dan)) moi. hieu sau cam ((xuc va) OR (tuc va)) hanh vai cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky ((tang dai) OR (tang dan)) moi. hieu sau cam ((xuc va) or (tuc va)) hanh vai cua tu*".