Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
hieu van » thien van, lieu va, hieu ve
cam luc » cam xuc, cau luc
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
sach ky » sach y, sach ty, sach kem
luc va » duc va, tuc va, loc va
sac ky » cac ky, sai ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((sach ky) or (sac ky)) nang ma hoa. ((hieu va) or (hieu van)) cam luc va danh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach ky) OR (sac ky)) nang ma hoa. ((hieu va) OR (hieu van)) cam luc va danh vai cua te.
• Adding a wildcard symbol may retrieve word variants: thuat ((sach ky) or (sac ky)) nang ma hoa. ((hieu va) or (hieu van)) cam luc va danh vai cua te*.