Perhaps you should try some spelling variations:
nguoi san » nguoi tay, nguoi dao, nguoi ma
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
toc sach » hoc sach, doc sach, thuoc sach
cam loc » cam lo
tai cua » thai cua, tai cuc, tri cua
nang ma » tang ma, sang ma, nang cao
loc van » luoc van, hoc van, lo van
hieu ve » hieu va, hieu van
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nguoi san) or (((te sach) or (toc sach)))) ky nang ma hoi. hieu ve cam loc van hanh tai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nguoi san) OR (((te sach) OR (toc sach)))) ky nang ma hoi. hieu ve cam loc van hanh tai cua tu.
• Adding a wildcard symbol may retrieve word variants: ((nguoi san) or (((te sach) or (toc sach)))) ky nang ma hoi. hieu ve cam loc van hanh tai cua tu*.