Perhaps you should try some spelling variations:
toc sac » toc sach, toc san, hoc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam thu » nam thu, cac thu, ca thu
thu dan » thuc dan, thu dang, thu ban
hanh de » hanh ve, hanh kem
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sac ky nang xa hoi. hieu va cam thu dan ((dang dieu) or (hanh de)) cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky nang xa hoi. hieu va cam thu dan ((dang dieu) OR (hanh de)) cua cu.
• Adding a wildcard symbol may retrieve word variants: toc sac ky nang xa hoi. hieu va cam thu dan ((dang dieu) or (hanh de)) cua cu*.