Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
tan thanh » tran thanh, tang thanh, toan thanh
cham duc » pham duc, cham soc, pham duy
te sach » toc sach
vu cham » va cham, vu kham, tu cham
ly nang » ky nang, ly hang, ly quang
dat cua » dai cua, day cua, mat cua
ly vang » ly hang, ly van, ly quang
hieu vu » hieu va, hieu ve, hieu su
cua te » cua tu
ma hoi » mai hoi, xa hoi, me hoi

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) OR (ly vang)) ((ma hoi) or (ma hoa)). hieu vu cham duc tan thanh dat cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ly nang) OR (ly vang)) ((ma hoi) OR (ma hoa)). hieu vu cham duc tan thanh dat cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ly nang) OR (ly vang)) ((ma hoi) or (ma hoa)). hieu vu cham duc tan thanh dat cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ((ly nang) OR (ly vang)) ((ma hoi) or (ma hoa)). hieu vu cham duc tan thanh dat cua te*.