Perhaps you should try some spelling variations:
nang tai » tang tai, sang tai, nang cao
hang tai » hang va, dung tai
cam tuc » cam xuc, cam tu, nam thuc
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
sac ky » cac ky, sai ky
tuc va » thuc va, truc va, tuc xa
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky ((nang tai) or (hang tai)) roi. hieu va cam tuc va hanh ((vai cua) or (hoi chuc)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((nang tai) OR (hang tai)) roi. hieu va cam tuc va hanh ((vai cua) OR (hoi chuc)) tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky ((nang tai) or (hang tai)) roi. hieu va cam tuc va hanh ((vai cua) or (hoi chuc)) tre*.