Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
thanh mat » thanh dat, thanh mau, thanh mot
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
hieu vu » hieu va, hieu ve, hieu su
vu pham » su pham, vi pham, vu kham
ma hoi » mai hoi, xa hoi, me hoi
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: te sach ly nang ((ma hoi) or (ma hoa)). hieu vu pham duc tan thanh mat ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang ((ma hoi) OR (ma hoa)). hieu vu pham duc tan thanh mat ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: te sach ly nang ((ma hoi) or (ma hoa)). hieu vu pham duc tan thanh mat ((cua te) or (cua tu))*.