Perhaps you should try some spelling variations:
nang cam » nang cham, nang cao, nang cap
thi nang » thi cong, ki nang, thi hanh
cam duc » cam xuc, cao duc, pham duc
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
sac ky » cac ky, sai ky
va dan » ca dan, va dao, va dau
di cau » diem cau
da cau » dat cau, va cau
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((nang ma) OR (sang ma)) hoi. thi nang cam duc va dan ((di cau) or (da cau)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang ma) OR (sang ma)) hoi. thi nang cam duc va dan ((di cau) OR (da cau)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((nang ma) OR (sang ma)) hoi. thi nang cam duc va dan ((di cau) or (da cau)) tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang ma) OR (sang ma)) hoi. thi nang cam duc va dan ((di cau) or (da cau)) tre*.