Perhaps you should try some spelling variations:
thanh kiem » thanh liem, khanh kiem, thanh kim
thien van » thi van
nang doc » nang luc
tuc gia » tac gia, duc gia, toc gia
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
sach ky » sach y, sach ty, sach kem
doc hoi » duoc hoi, hoc hoi, doc hai
sac ky » cac ky, sai ky
tra te » tra tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach ky) OR (sac ky)) nang doc hoi. ((hieu va) or (thien van)) cam tuc gia thanh kiem tra te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ky) OR (sac ky)) nang doc hoi. ((hieu va) OR (thien van)) cam tuc gia thanh kiem tra te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ky) OR (sac ky)) nang doc hoi. ((hieu va) or (thien van)) cam tuc gia thanh kiem tra te".
• Adding a wildcard symbol may retrieve word variants: so ((sach ky) OR (sac ky)) nang doc hoi. ((hieu va) or (thien van)) cam tuc gia thanh kiem tra te*.